O2

O2 vouchers are available in the following Top-Up amounts: £10, £15 and £20; and come in two forms. In the past, if you bought an O2 voucher you would've been given a physical, plastic card with a scratch-off silver panel that concealed a voucher number.

Now you can also buy an O2 Top-Up voucher in the form of a printed till receipt that has the voucher number printed on it. They're still called O2 Top-Up vouchers but they're produced electronically.

Both forms of O2 Top-Up voucher work the same way.

To use a voucher

Call the O2 Top-Up line free by dialling Hotkey 3 or 4444 from your mobile phone or 08456 062 277 (calls charged at the local rate) from any landline.

Follow the instructions asking you to enter your voucher number.

When you hear the "Top-Up successful" message, your calltime has been credited.

Something to remember about O2's new electronic Top-Up vouchers is that they expire six months from the day they were issued, so don't forget to load your calltime within that time.

Something special about O2's physical, plastic vouchers

Once you've Topped-Up using a physical, plastic O2 voucher, it then becomes your E Top-Up card. We'll send you a text message within a few minutes telling you your E Top-Up card has been activated and is ready to use to E Top-Up next time you need calltime.

How do I get an O2 voucher?

You can buy an O2 voucher (either a physical, plastic card or a printed till receipt, or both) from thousands of outlets across the UK displaying the green Top-Up logo.