Hello, If you need assistance with your mobile service then we'd
recommend calling or live chatting us directly. Unfortunately we're
unable to provide any mobile support via our Community. How to contact
TalkTalk Broadband - TalkTalk Help & Support T...
I am upgrading from G3 to G4 have swapped SIM and memory card to G4
phone.New phone will receive incoming calls and messages but will not
allow outgoingcalls or messages.