Chosen Solution
Recently, the signal on my iPhone 8 Plus has been getting weaker. I’ve been getting low to no service in areas I used to have plenty Should I look into replacing the cellular antenna flex cable? Or is this more likely something more to do with the charging flex cable (which I have replaced once)? Or something different entirely?
If you have previously replaced the charging port flex cable, That might be my first thought since replacement charge ports are notoriously shoddy, and I believe there are some cellular antenna or communication based signals which run through it, so it could certainly be to blame.