Would resetting the phone be any help? Coz to be honest, I only use my phone as a phone these days, I hardly run any apps on it.
Probably, hard reset it (hold down the home and power buttons for a while until it completely shuts down) rather than turning it off and on. Also, what Andy said about updating the software. I had a similar problem once with mine, I couldn't make or receive calls. Hard reset fixed it and it hasn't happened again.
Probably, hard reset it (hold down the home and power buttons for a while until it completely shuts down) rather than turning it off and on. Also, what Andy said about updating the software. I had a similar problem once with mine, I couldn't make or receive calls. Hard reset fixed it and it hasn't happened again.