iPhone 4s not making calls
Roy Rainford
After replacing the battery on my old iPhone 4s it's working! That is, on the internet via my local network for Mail and Safari but I can't send phone calls from it. There is a strong wireless signal. Have checked the settings against my iPhone SE, which makes calls and one difference is that the 4s has no 'Client ID' showing. Is this a password from my Provider, TalkTalk, or Carrier, Virgin?