Go to Answer
40p is the correct charge for sending an MMS (picture message) for Virgin Mobile pay monthly customers.Did you not intentionally send an MMS?
If not, there are various reasons why a SMS (text message) may have been converted to MMS by your phone.See: HERE (this is actually an O2 support page but is quite clear and informative).
If you want to say thanks > click 'Kudos'.Answered your question? > click 'Mark as Helpful Answer' also.
Found this answer helpful? Share it!
to avoid the 40p charge don't send anyone an MMS picture.(WhatsApp is a great way of sending photo's between family and friends).
To avoid accidentally sending an MMS follow the advice in the O2 support guide I linked to in my first post.