Chosen Solution
I have an Iphone 7, that doesn´t make calls, like, when I look at top left corner It says “No service”. What is wrong with my phone? An anthena? Is there a anyway I can replace it?That´s what I need help!
If the antenna wire is connected properly from the dock connector to the motherboard you can rule out an antenna issue. The no service on the 7 series usually is a result of an audio IC repair which has had too much heat applied. The baseband IC is underneath the audio IC and is under filled, too much heat causes solder balls to bridge giving the searching no service. Flexation or a heavy drop can also damage baseband. The baseband CPU will have to be removed and reballed. It will not be a cheap fix.
