Why have I been charged extra for texts when my tariff is unlimited texts?
Are you texting non-UK numbers, @Caro?
Or using smilies or emojis that convert your SMS into an MMS, which costs 55p to send?
Guide: Accidental MMS Sending and How to Avoid it
See guide for what is and isn't included in allowances Guide: Your Allowances - what is and isn't included
Track usage, upgrade and get support with the My O2 app