The guide separates Siru Mobile from Fonix and Boku, covering deposit restrictions, withdrawals, and what operator examples do—and do not—prove.
Siru Mobile’s Place in the Shrinking Pay-by-Phone Market
Siru Mobile remains an option at a limited number of UK casino operators, rather than a payment method offered across the market. A specialist review identifies Mr Vegas and Videoslots as casinos accepting Siru Mobile. These are useful operator examples, not a complete directory: payment menus can change, and acceptance at one casino does not establish availability elsewhere.
The distinction matters because Pay by Phone has contracted. A specialist review describes UK operators as moving away from Boku from 2023 onwards, with some switching to Fonix or Siru Mobile and others removing phone-billed deposits altogether. That shift has left a smaller and less uniform set of choices. A casino may still support Pay by Phone while no longer using the particular service a customer expects.
The available operator examples show that the methods are not interchangeable by name. Mr Vegas and Videoslots are associated with Siru Mobile, while MrQ and Duelz are associated with Fonix. Those names illustrate separate routes within a narrow category; they do not establish that either service is accepted by every casino that once offered Boku. For someone comparing casinos that accept Siru Mobile in the UK, the relevant distinction is the payment option currently shown by the individual operator.
The broader Boku picture helps explain why older lists can be unreliable. A small number of UK Gambling Commission-licensed casinos still accept Boku, but the group has been shrinking since 2023. Some operators have replaced it with another Pay by Phone service; others have removed the option. A directory built around Boku acceptance therefore cannot be treated as a Siru Mobile directory, or as a dependable snapshot of current payment menus.
That contraction does not mean the UK Gambling Commission introduced a named ban on Boku. The reported change is at operator level: individual casinos have dropped the method because of compliance risk. The practical result for a customer is still fewer cashier options, but the cause is not a blanket rule prohibiting Boku across licensed casinos. Treating a market-wide decline as a regulator’s direct ban would confuse the outcome with the mechanism.
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Nor does a general label such as “mobile casino” establish that Siru Mobile can be used to fund an account. A site may work on a phone and offer casino games without accepting a phone-billed deposit. Payment acceptance is a cashier feature, not a consequence of using an Android device or a mobile browser.
“Best” also depends on the condition being measured. If the condition is Siru Mobile acceptance, the operator examples are narrow. That alone says nothing about game range, bonus value, withdrawal arrangements or other account terms. A casino cannot be ranked as best for a particular customer merely because one deposit method appears in its cashier. The payment feature is one input, not a substitute for comparing the rest of the offer.
Availability should be checked at the point of deposit, rather than inferred from an old list. Payment methods can be altered as operators revise their cashier arrangements, and the wider pattern since 2023 is one of change rather than expansion. A previously published mention of Boku, Fonix or Siru Mobile may describe a past configuration. The account’s live cashier is the relevant place to establish which method the operator currently presents.
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The UK regulatory setting is separate from the payment-method question. Remote gambling operators serving consumers in Great Britain must hold the relevant UK Gambling Commission licence, regardless of where their equipment is based. That licence concerns the operator’s authority to offer gambling; it does not make a particular Pay by Phone service available. Payment acceptance and licensing answer different questions, so one should not be used as proof of the other.
The narrow picture is therefore clear: Siru Mobile is accepted at the named examples of Mr Vegas and Videoslots, while other operators may use Fonix or may have removed Pay by Phone. Meanwhile, the remaining Boku casinos form a shrinking group, not a stable proxy for Siru availability. No market-wide claim follows from those examples. The payment method has to match the individual casino’s current cashier, and the wider direction of travel gives little reason to assume that a method listed in an older directory remains available.
Mr Vegas
Associated with Siru Mobile acceptance according to a specialist review.
Videoslots
Identified as an operator that accepts Siru Mobile.
MrQ
Associated with Fonix rather than Siru Mobile.
Duelz
Associated with Fonix rather than Siru Mobile.
Siru Mobile, Fonix and Other Ways to Fund a Casino Account
Siru Mobile is one route within the broader Pay by Phone category, not a label for every payment charged through a mobile account. Fonix is another distinct option. The method a casino accepts therefore matters more than the general fact that a deposit can be made by phone: support for Fonix does not establish support for Siru Mobile, and the reverse is also true.
A specialist review describes a shift away from Boku since 2023, with operators adopting Fonix or Siru Mobile, or removing Pay by Phone altogether. That is a change in the available routes, not a universal replacement pattern. A casino may offer one of the services, another one, or none. The payment names are not interchangeable, and the presence of one does not imply that the others appear in the same cashier.
The mobile network is only one part of the route
Pay by Phone and Fonix are supported by EE, O2, Vodafone and Three. That identifies network support for those payment services; it does not confirm that a particular casino accepts a particular service. The route depends on both ends: the payment option must be offered by the casino and supported by the mobile network.
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This distinction matters when comparing Siru Mobile with alternatives. A mobile network’s support for Pay by Phone or Fonix is not evidence that it supports Siru Mobile at a specific casino. Equally, a casino listing Fonix does not establish that a Siru Mobile payment will work there. The useful comparison is between the exact method named in the casino cashier and the method available through the phone account, rather than between broad descriptions such as “mobile payments”.
The same point applies to searches for casinos accepting Siru Mobile. The relevant question is whether Siru Mobile itself is available as a funding option at the operator, not whether that operator accepts some form of phone-based payment. A shared payment channel does not make the methods equivalent.
Boku remains a separate route
Boku should also be treated as its own payment method. The documented movement away from Boku towards Fonix or Siru Mobile does not mean Boku has become another name for either service. Where Boku remains available, it is a direct route charged through the mobile account; its availability at one casino says nothing by itself about Siru Mobile or Fonix there.
Boku and Neteller route
Boku can be used to fund a Neteller balance, which can then be used at casinos that accept Neteller. This is a two-stage path where the phone-based payment funds the e-wallet, which is then used with a casino that accepts it.
A specialist review also describes an indirect route: Boku can be used to fund a Neteller balance, which can then be used at casinos that accept Neteller. This is not the same as depositing with Boku at the casino, nor does it make Neteller a Pay by Phone service. It is a two-stage payment path: the phone-based payment funds the e-wallet, and the e-wallet is then used with a casino that accepts it.
That route depends on the services involved being available for the intended use. Casino acceptance of Neteller is a separate condition from the ability to fund Neteller through Boku. The two should not be collapsed into a single claim that a casino accepts Boku. The payment method shown at the casino is Neteller in this case, while Boku is used earlier in the chain.
Comparing routes without assuming equivalence
For a casino account, the practical distinction is the point at which each method enters the transaction:
- Siru Mobile: a specific Pay by Phone option, where the casino offers it.
- Fonix: a separate mobile payment service, also dependent on casino acceptance.
- Boku: another distinct phone-account payment route; a specialist review reports that it can also be used to fund Neteller before Neteller is used at a casino.
These routes describe different ways a payment may reach an account. They do not form a single combined system, and support for one does not prove access to another. Network support is useful context, but the casino’s own cashier determines which method is presented for that account.
The result is a narrower comparison than “mobile payment versus no mobile payment”. A casino may use Fonix instead of Siru Mobile, retain Boku, or provide no Pay by Phone option. An e-wallet route may offer another path where its funding method and the casino’s accepted methods align, but it remains distinct from a direct Siru Mobile deposit. Payment labels therefore need to be checked at the level of the actual route; otherwise, the apparent alternative may not be available at the casino at all.
What the Verified Information Says About Siru-Funded Slots
A casino accepting Siru Mobile is not the same thing as a particular slot accepting Siru Mobile. The payment method is associated with the casino account, while a slot is a game offered within that casino. A specialist review identifies Mr Vegas and Videoslots as operators that accept Siru Mobile.
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The distinction matters when comparing searches for mobile slots, slot apps and casino payment methods. A payment-method listing concerns how money is added to an operator account. It does not, by itself, specify which games are available, whether a particular title appears in an app, or whether the payment option is presented in every version of the cashier. Those are separate details, and they should not be folded into a claim about a named slot.
The same limit applies to phrases such as “Siru Mobile slots” or “slots paid for by phone”. They may describe the route used to fund a casino account, but they are not evidence that the payment is attached to each spin or that a game has its own Siru Mobile setting.
This also affects how a slots list should be assessed. Naming a title alongside the Siru Mobile label can imply a confirmed connection between that game and the payment method. Without game-specific terms, that implication is not justified.
A casino’s mobile experience is another separate question. Siru Mobile acceptance at Mr Vegas or Videoslots does not, on its own, establish that the method appears in a mobile app, works through every mobile browser, or is available on a particular device. Nor does it confirm that free-play versions of any games use the same payment arrangement. Free play and real-money account funding describe different activities; the operator-level payment statement only concerns acceptance of Siru Mobile by the casino.
Payment and Games
Siru Mobile acceptance is a cashier feature of the casino account and does not guarantee the availability of specific slot titles or features within the games themselves.
For a practical comparison, the relevant unit is therefore the casino account, not the individual slot machine. Mr Vegas and Videoslots are the named operators associated with Siru Mobile in a specialist review, but that should not be converted into a promise about every game in either catalogue. Payment availability can also depend on the operator’s current cashier, so a general listing should not be treated as a guarantee that the option will appear in every session.
“Legit” also needs a precise meaning. The Siru Mobile label alone says nothing about a slot’s quality, fairness or licensing status. It identifies a payment route, not an independent endorsement of a game. For UK play, the operator’s regulatory position is a separate matter from whether Siru Mobile is listed as a deposit option; payment acceptance cannot substitute for checking the casino’s licence.
It does not support naming Siru-specific slot titles, claiming that every mobile slot at those operators is covered, or describing a game-specific payment feature. A slot catalogue and a cashier may sit within the same casino, but they answer different questions.
Deposit Steps and Amount Restrictions: Keep Boku Separate
Boku’s deposit process is a legacy Pay by Phone route, not a set of instructions for Siru Mobile. A cashier may display different payment methods according to the casino and account, so the steps below apply only when Boku is actually offered. Siru Mobile availability does not mean that Boku’s screens, confirmation process or amount rules also apply.
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For a Boku deposit, the player selects Boku in the casino cashier and enters the intended amount alongside a mobile number. The transaction then requires confirmation using a verification code sent by SMS. This links the payment to the phone number entered at checkout; it is not a debit-card payment, even where a search or payment description uses the word “card”. Boku charges the mobile account rather than processing a card deposit.
The amount increments require more caution. A specialist review reports that Boku deposits are restricted to amounts divisible by ten, giving £10, £20 and £30 as examples. That is a reported condition, not a safe assumption about every casino’s current cashier. Payment options and their terms can change, and a cashier that offers Boku may still apply its own available amounts. The displayed choices at the point of deposit are therefore more useful than treating the reported increments as a universal rule.
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The distinction matters for searches about a Siru Mobile minimum deposit or a Siru-funded offer. A Boku amount rule cannot establish Siru Mobile’s minimum, and the SMS code described above cannot be assumed to be Siru’s confirmation method. Nor does the existence of a payment option establish that a casino provides a no-deposit bonus, free spins or a no-wagering offer. Those are separate terms, not features implied by the cashier’s payment flow.
A rejected Boku transaction may reflect an amount the cashier does not accept, an incorrect phone number or a confirmation that was not completed. The documented sequence is straightforward: select Boku, enter the requested deposit and mobile number, then submit the SMS code. If Boku is absent from the cashier, there is no Boku deposit to configure through those steps. Switching to Siru Mobile means following the Siru option actually presented by that casino, rather than reusing Boku’s instructions.
Boku Deposit Process
Step 1: Selection
Select Boku in the casino cashier and enter the intended amount alongside a mobile number.
Step 2: Verification
Receive a verification code via SMS.
Step 3: Confirmation
Submit the SMS code to complete the transaction.
For a real-money deposit, the amount submitted is only one part of the transaction. The cashier’s listed options determine whether that amount can be selected, while the phone-based confirmation completes the Boku authorisation. The reported divisible-by-ten condition should be treated as a qualified description of Boku, not as evidence that every amount is accepted or that every casino still supports the method. It also says nothing about the terms attached to another Pay by Phone service.
In practical terms, the useful check is method-specific: identify whether the cashier names Boku or Siru Mobile, then follow that method’s own instructions and displayed amount choices. Similar labels do not make the services interchangeable.
Real-Money Play and the Withdrawal Gap
A mobile-phone deposit and a cash-out are separate parts of a real-money casino account. Boku covers the first: it can put money into an account, but it cannot receive casino winnings. A balance funded through Boku therefore needs another route for withdrawals.
That distinction matters when comparing pay-by-phone with bank cards, e-wallets or bank transfers. A deposit option shown in the cashier is not, by itself, evidence that the same option can return funds. With Boku, it cannot. An alternative withdrawal method must be registered when depositing, and its availability and conditions depend on the casino’s own cashier and account rules.
This is a Boku-specific limitation, not a general rule that can be applied to every mobile payment service. Siru Mobile and Boku are different methods; the Boku withdrawal restriction should not be treated as proof of how a Siru-funded account must be paid out. The practical check is the operator’s listed withdrawal options, not the label attached to the deposit.
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For someone considering real-money slots with Siru Mobile, the same distinction remains useful without assuming that the deposit route also serves as a cash-out route. The account’s payment options determine how funds can move in and out. A casino may display one method for deposits and require a different method for withdrawals. The relevant terms should be clear before money is added, because a deposit method alone does not complete the payment arrangement.
The amount available to withdraw is also not simply a matter of reversing the original phone payment. Boku does not support that transaction. Any withdrawal must use a separate method offered by the casino, with the account set up for that route. The deposit and withdrawal sides should therefore be checked as two separate entries rather than treated as a single payment feature.
For UK real-money play, the operator must hold a current UK Gambling Commission licence, and play is for adults aged 18 and over. The licence is a regulatory requirement; it does not change Boku’s deposit-only function or turn it into a withdrawal option. A payment method’s presence in a cashier is not a substitute for checking the operator’s licence on the Commission’s public register.
The cash-out question is straightforward: Boku can fund a casino account, but winnings cannot be sent back through Boku. A separate withdrawal method is required. That boundary applies to Boku, while the terms for Siru Mobile must be assessed as Siru terms rather than inferred from another provider.
Withdrawal Limitation
Boku is a deposit-only method and cannot be used to receive casino winnings. A separate withdrawal method must be used to access funds.
Pay-by-Phone Limits: Transaction Caps and Network Controls
Boku limits are not a single figure that can be applied across every casino and mobile network. A specialist review describes a UK transaction ceiling of £30, with some casinos or network operators permitting £40 or £50. Those higher amounts should be treated as reported exceptions, not as a limit available at every cashier.
Published accounts also disagree on how the cap works. One describes Boku as limited to about £10 per transaction and £30 per day at network level. Another gives a £30 daily limit but does not specify a separate transaction cap. The difference matters: a daily allowance does not establish how much can be charged in one payment, while a transaction ceiling does not show how much remains available for the day.
A specialist review attributes the daily limit to the mobile operator rather than the casino. Under that account, the casino’s own cashier limit and the network’s cumulative control are separate checks. A payment may fit within the casino’s stated maximum and still be refused if the mobile account has reached its network allowance. Conversely, a network-level figure does not confirm that a particular casino will accept a deposit of that size.
The mobile operator’s controls are also distinct from any limit imposed by the casino. The casino determines which payment amounts its cashier accepts; the network applies its own restrictions to charges made through the phone account. The published figures therefore describe different possible controls, not a guaranteed allowance for an individual deposit.
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These Boku figures do not set Siru Mobile limits. They should not be used to estimate the amount available through Siru, or to assume that a Siru deposit follows Boku’s transaction or daily rules. Payment methods can have separate terms even when both charge through a mobile connection.
For a practical calculation, the relevant limit is the lowest one that applies: the amount allowed by the casino, the amount allowed by the network, and any remaining network allowance. Since the reported Boku figures conflict and some are attributed to particular reviews, treating any one amount as a universal UK cap would overstate what those figures establish.
Choosing a Pay-by-Mobile Alternative When Siru Is Unavailable
When Siru Mobile is not listed in a casino cashier, the available Pay by Phone route depends on the operator. A specialist casino review describes a shift away from Boku since 2023: some operators moved to Fonix or Siru Mobile, while others removed Pay by Phone altogether. That is a change in payment options, not evidence that one replacement is accepted across the market.
The same review identifies MrQ and Duelz as operators accepting Fonix, and Mr Vegas and Videoslots as accepting Siru Mobile. These examples give a practical distinction between the two services, but they are not a directory of every casino or a guarantee that a method remains available. Payment menus can change; the cashier is the relevant place to confirm what an individual account can use.
If Siru is unavailable, Fonix is one documented alternative, but only where the casino offers it. If neither service appears, a casino may have discontinued Pay by Phone rather than replaced it with another mobile option. A preference for depositing through a phone bill therefore does not translate into a single substitute that works across all operators.
Summary of Alternatives
- If Siru Mobile is unavailable, Fonix is a documented alternative at some operators.
- Payment menus change frequently; always check the live casino cashier.
- Presence of one mobile payment method does not imply the availability of others.
Searches for the best Siru Mobile casino or Siru-compatible slots can also blur two separate questions: whether a casino accepts the payment method and whether a particular game is available there. The named operators are associated with Siru deposits, but that does not establish payment conditions for individual slot titles. The payment method should be assessed at casino level, not treated as a feature of each game.
Boku belongs to the older part of this shift. Its presence at one casino does not show that other operators still support it, and the movement towards Fonix or Siru has not been universal. The practical comparison is therefore narrow: check whether the required casino currently lists Siru, Fonix or any Pay by Phone option at all. If the preferred service is absent, the remaining choice may be another payment route rather than another phone-based provider.
Small Deposits and What the Published Boku Figures Actually Show
A low minimum deposit is useful only if it applies to the payment method named at checkout. The published Boku figures do not establish a minimum for Siru Mobile, so they cannot show whether a Siru-funded deposit of £5 is available. Boku and Siru Mobile are separate services; a figure attached to one should not be treated as a term for the other.
The Boku figures themselves conflict. One specialist review gives a minimum of €10, a maximum of €30 and a monthly limit of €240. A separate specialist review describes the UK standard as £30 per transaction, with some operators allowing £40 or £50. Those accounts use different currencies and do not present a consistent set of terms. They should not be combined into a single deposit range, and none supplies a Siru Mobile limit.
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The same distinction applies to speed. Boku transactions are described as being credited almost instantly after mobile-number entry and SMS confirmation. That is a Boku mechanism, not evidence that a Siru Mobile deposit reaches a casino account at the same speed. For Siru, a claimed instant-deposit time or a particular minimum would need to come from the operator’s own current cashier terms.
Pay by Phone availability also says nothing about a casino’s GamStop status. The payment route cannot establish whether an operator participates in GamStop, and a Siru Mobile listing is not evidence either way. Payment method, deposit threshold and self-exclusion status are separate conditions.
For a small-deposit decision, the useful distinction is therefore narrow: the published Boku amounts are inconsistent, and they do not answer the minimum-deposit question for Siru Mobile. The amount displayed in a casino’s cashier is the relevant transaction condition; Boku figures should not be used as a substitute. Nor does a low stated minimum settle whether a particular bonus applies or how quickly funds are credited. Those terms belong to the operator and payment method actually selected, not to another mobile-payment service.
UK Licensing Is Not Evidence of GamStop Status
A UK Gambling Commission licence establishes that an operator is authorised within the British regulatory system. It does not, by itself, establish whether a casino participates in GamStop. The two questions concern different things: licensing covers permission to offer gambling, while GamStop status concerns self-exclusion arrangements. A casino accepting Siru Mobile cannot therefore be classified as on or off GamStop from its payment method alone.
Does a UK licence guarantee GamStop status?
No. A UK Gambling Commission licence concerns the operator’s authority to offer gambling, whereas GamStop status concerns self-exclusion arrangements. They are separate regulatory matters.
Can I use Boku to withdraw my winnings?
No. Boku is a deposit method. Any winnings must be withdrawn using a different, registered method offered by the casino.
The Commission regulates remote gambling offered to consumers in Great Britain, wherever the operator’s key equipment is located. It is the sole regulator for commercial gambling in Great Britain, issuing operating licences to businesses and personal licences to individuals working in the sector. The Gambling Act 2005 governs gambling in England, Wales and Scotland; Northern Ireland has a separate legal framework.
For a casino serving British customers, the relevant question is whether the business holds the appropriate current operating licence. A licence is not a general endorsement of every payment route, game or account feature, and it does not answer every question about a site’s self-exclusion arrangements. Those details need to be checked separately rather than inferred from the regulator’s name or from a Siru Mobile option in the cashier.
Before depositing, the operator’s licence number can be checked against the UK Gambling Commission’s public register. That establishes the licence position; it should not be treated as proof that the casino is connected to GamStop, or proof that it is not. The same distinction applies to searches for Siru Mobile casinos outside GamStop: payment acceptance and self-exclusion status are separate criteria, and one does not settle the other.
This distinction matters because UK regulation has a defined territorial scope. The Commission’s role covers remote gambling offered to Great Britain consumers, regardless of where the equipment sits. A casino’s marketing language, payment options or licence reference should not be used as a substitute for checking the specific status being assessed. For licensing, the public register is the relevant record; for GamStop participation, the licence alone supplies no answer.
Bonus Eligibility on Pay-by-Phone Deposits
A Pay by Phone deposit does not have one bonus rule across UK casinos. A specialist casino review identified MrQ, Duelz, Mr Vegas and Videoslots as operators where pay-by-phone deposits can qualify for bonus eligibility. That is a useful distinction from merely accepting the payment method: the deposit has to count under the offer’s terms as well as appear in the cashier.
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The four operators do not represent a guarantee that every promotion accepts every Pay by Phone transaction. Welcome offers, reloads and other promotions can have separate conditions. Before depositing, the relevant terms need to establish whether the chosen payment method qualifies, which deposit must be made to activate the offer and what wagering applies. A listed payment option is not a bonus entitlement.
A specialist review describes a common welcome-offer structure as a 100% deposit match capped at £100, with a 35x wagering requirement. The arithmetic matters more than the headline match: the bonus is conditional funds, and wagering multiplies the amount specified by the offer terms. The terms must state whether that amount is the bonus, the deposit, or both; the headline percentage alone does not settle the calculation.
The same review reports bonus funds expiring within 30 days and bonus spins within 72 hours. Those deadlines are offer conditions, not universal rules for all casinos or promotions. An unused balance or spins can therefore lose value when the stated period ends, even if the deposit itself remains in the account.
A search for a Siru Mobile welcome bonus or a no-deposit offer should not be treated as evidence that one is available. Pay-by-phone bonus eligibility and the existence of a particular promotion are separate questions. For Mr Vegas and Videoslots, the review’s eligibility finding concerns pay-by-phone deposits; it does not establish that every bonus accepts Siru Mobile or that either operator has a no-deposit promotion.
The practical calculation is simple: compare the deposit amount, bonus cap, wagering basis and expiry conditions, then confirm that the offer accepts the payment route being used. Bonus terms should be checked before depositing, and the casino’s UK Gambling Commission licence should be verified on the public register before money is placed.
What are the deposit limits at pay-by-mobile casinos?
Limits depend on the payment service and mobile operator. For Boku, the standard UK limit is £30 per transaction, while network-level limits are typically about £10 per transaction and £30 per day; some casinos or networks may allow up to £40 or £50.
What is the standard Boku deposit limit in the UK?
The standard limit is £30 per transaction, although some casinos or mobile networks may allow up to £40 or £50.
Are Boku deposits eligible for casino bonuses?
Bonus eligibility varies by casino. Boku deposits generally do not come with a specific bonus, while bonus eligibility for pay-by-phone deposits is confirmed at MrQ, Duelz, Mr Vegas and Videoslots.
Why are UK casinos dropping Boku?
Individual casino operators have dropped Boku because of compliance risk. The UK Gambling Commission has not introduced a Boku-specific ban.
Why might a Boku deposit be declined?
A deposit may exceed the applicable transaction or daily limit, or a PAYG phone may not have enough remaining credit. Boku deposits also need to be in amounts divisible by ten.