how do I set up direct debit with O2

O2 automatically sets up a direct debit for you when you start a Pay Monthly contract using the bank details you provided at sign-up, so you don't need to do anything. If you need to change or reset your direct debit later, call O2 on 0800 902 0217 (free from UK landlines) or manage it through the My O2 app or website.

can I change my O2 direct debit details online

Yes, you can change your direct debit through My O2 by signing in at o2.co.uk or using the My O2 app on your phone. You can view and update your payment details without needing to call O2.

why has O2 cancelled my direct debit

O2 has been updating its billing systems, which involves cancelling old direct debits and setting up new ones to replace them. If you receive a notification about this, it is legitimate and comes directly from O2. You'll be notified by email or letter, and your bank may also contact you with your new Direct Debit reference number.

O2 direct debit phone number

The O2 customer service number for direct debit setup is 0800 902 0217, which is free to call from UK landlines. They can help you set up, reset, or change your direct debit over the phone.

is paying by direct debit with O2 safe

Yes, paying by direct debit with O2 is safe and ensures your bill is paid on time each month. O2 uses your bank details securely and notifies you of any changes to your direct debit arrangement by email or letter.

May 10, 2026

Last updated on May 10, 2026

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0800 902 0217

O2 customer service phone number for direct debit setup

Source: O2 Community

O2 automatically sets up a direct debit for you when you start a contract, using the bank details you provided at sign-up. If you need to change or reset that direct debit, you can do it by phone or through My O2. Paying by direct debit is the simplest way to make sure your bill goes out on time each month.

How does O2 set up your direct debit?

When you join O2 on a Pay Monthly contract, O2 creates the direct debit for you using the account details you gave at the time. You do not need to arrange anything separately. As O2 puts it on its help pages: “You don’t need to do a thing.”

How to set up or change your direct debit

If your direct debit needs resetting, you have two options.

Call O2 on 0800 902 0217. As one O2 Community member explains: “You need to call O2 on 0800 902 0217 and they can reset up the direct debit for you or you should be able to do so in My O2.” Calls from UK landlines are free.
Use My O2. Sign in at o2.co.uk or open the My O2 app on your phone. From there you can view and update your payment details without speaking to anyone.

Why has O2 cancelled and replaced your direct debit?

O2 has been updating its billing systems, and part of that process involves cancelling old direct debits and creating new ones. If you receive a notification about this, it is legitimate. O2 sends an email to affected customers, or a letter if it cannot reach them by email. Your bank or building society may also send a separate confirmation of any reference number changes. No action is needed on your part when this happens.

Why direct debit is worth using

Direct debit means your bill goes out automatically on the due date, so there is no risk of forgetting a payment. That keeps your account in good standing and avoids any late-payment complications. If your bank details change at any point, update them promptly via My O2 or by calling 0800 902 0217.

You need to call o2 on 0800 902 0217 and they can reset up the direct debit for you or you should be able to do so in myo2.
— Community member (O2 Community forum)

You don't need to do a thing.
— O2 (official help page, o2.co.uk)

Frequently asked questions

how do I set up direct debit with O2: O2 automatically sets up a direct debit for you when you start a Pay Monthly contract using the bank details you provided at sign-up, so you don't need to do anything. If you need to change or reset your direct debit later, call O2 on 0800 902 0217 (free from UK landlines) or manage it through the My O2 app or website.
can I change my O2 direct debit details online: Yes, you can change your direct debit through My O2 by signing in at o2.co.uk or using the My O2 app on your phone. You can view and update your payment details without needing to call O2.
why has O2 cancelled my direct debit: O2 has been updating its billing systems, which involves cancelling old direct debits and setting up new ones to replace them. If you receive a notification about this, it is legitimate and comes directly from O2. You'll be notified by email or letter, and your bank may also contact you with your new Direct Debit reference number.
O2 direct debit phone number: The O2 customer service number for direct debit setup is 0800 902 0217, which is free to call from UK landlines. They can help you set up, reset, or change your direct debit over the phone.
is paying by direct debit with O2 safe: Yes, paying by direct debit with O2 is safe and ensures your bill is paid on time each month. O2 uses your bank details securely and notifies you of any changes to your direct debit arrangement by email or letter.

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Sources

Solved: how to set up/change a direct debit - O2 Community (community.o2.co.uk)
direct debit setup - O2 Community (community.o2.co.uk)
Solved: setting up a direct debit - O2 Community (community.o2.co.uk)
Direct debit changes explained (www.o2.co.uk)

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Tags: o2 direct-debit payment-setup mobile-billing my-o2-app