I have 3G signal but does not work out the house for imessage? Imessage will only work at home as i am connected to a home internet but when i leave the house it goes onto standard messages even though i have 3G. Would it be my SIM? Tried everything! Ive restored my phone, backed up, singed out iCloud and itunes, imessage and facetime and signed back in again, reset my network settings and everything else possible!
What would be the cause of this? Would i need to get my SIM swapped? Thank you.