Most plan.com tariffs come with inclusive, unlimited allowances for minutes and texts, to STANDARD UK numbers, located in the UK at the time of activity. Texts are SMS - text only messages.

If you have incurred charges for messages, the likely reasons are:

• You have exceeded our 3000 SMS Fair Use Policy. Click here for further detail: https://guides.plan.com/fair-usage/
• You have sent a Multimedia Message (MMS). MMS can be pictures, video clips, audio clips, long messages that exceed a high character count, or a text message (SMS) sent to multiple recipients at the same time.
• You have sent or received a text message (SMS) to or from a chargeable service, such as a competition number, premium rate service or subscription service. Such services are not 'standard' and may not be based in the UK.
• When roaming abroad, dependent on location, you sent or received a text message(s).

To prevent reoccurrence of charges, from your my.plan dashboard you can block access to any message activity that might incur charges.

Go to:

CONTROLS > PREMIUM & ROAMING > ADULT PREMIUM TEXTS

Manage all devices from the column header options or choose any user(s) and toggle ALLOWED  to BLOCKED.

Full itemisation is also available from your my.plan dashboard, through the USAGE & CHARGES tab.

Not sure about a number that's on your bill? Check details by clicking on the link: https://psauthority.org.uk/for-consumers/ive-been-charged-what-next