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My iPhone 6 has been having some issues with it’s cellular service. The phone will say no service, and so I turn the phone into airplane mode to restart the signal. The phone will continue to search for service, but won’t pick any service and just continue searching. Before I would restart all setting and this would fix the phone for a few days. Now I tried to do this and my phone won’t pick up anything. I can pick up wi-fi and bluetooth fine with zero issues. I reset all my settings and content as if it was a brand new phone and it still doesn’t work. Is there any way to fix this? Also if I need a part to change out what would I need?

Hi Try replacing the signal antenna and see if this improve the signal. Signal antenna is coming with charging flex. See photo:

Good luck

With a sim inserted. Go settings > general > about can you a iccid number?