I have just changed device to samsung A41 and had no problems sending sms texts or via messages earlier in the week. Now I can only receive them. I have turned battery optimiser off and on, I have checked my limit and credit limit are fine and the message centre number is fine. I have uninstalled and reinstalled sms app. I have turned the phone on and off . Nothing works. I need this to keep in touch with my elderly parents who cannot use whatsapp or facebook messenger and live a long way away.
still can't send messages with new sim and now cant make calls and get message " not registered on network" I don't know if it is because I have not received a message to say the sim is activated but it has been over 24 hours now since I put it in the device
I followed the instructions and popped sim in. I was not asked for a pin and got no activation text. I have just turned it off fully and restarted. Making calls is now working but sending sms texts still gets "failed to send" message