Free Microsoldering Forum – Ask an Expert
I have seen this so many times, I iPhone 7 with a weak signal but I don't know from where to start the troubleshooting ?
Baseband reball ?
Yes weak signal, on a good iPhone 7 it will have full signal, but for this one a one bar of signal.
Most likely, you just have a problem with one of the antennas then. Have you checked those yet?
How to check them? by replacing the charger connector or there is an other way ? More precise ?
I'm not really sure where the cell service antennas are located. I would try the logic board in a known good housing and see if that helps.