Chosen Solution
Hello, So I pulled out my old iPhone to use while my other phone is sent in for an under warranty repair from the manufacturer. My goal here is to not spend more than US$10-20 on this phone if it was fully working, I could maybe get $75 for it on eBay. However, despite having used this phone with this SIM card, the phone is having trouble connecting to my cellular network. A bit bit more detail: the phone will be in either no service or searching. It it only goes into no service after I turn the phone off, take out the SIM card, and then put it back in, and then turn the phone back on. And this isn’t an immediate situation. I have gotten connected to the network for a few minutes to a few hours after doing these steps, but then it always eventually goes to no service. It will remain in the no service status until I restart the phone (with no additional steps taken) the phone has had all my active SIM cards placed into it to test, all did the same thing. (2 US SIM cards, both prepaid carriers, one running on T-Mobile’s network and one running on AT&T’s network, one British SIM card (3) which will connect to either T-Mobile or AT&T) I had the phone sitting with the British SIM card in it for a while. However, I’m somewhat inclined to believe this isn’t related to the issue, as this issue only popped up a few days after putting my primary US sim (running on T-Mobile) into the phone. I’ve reset the network settings a bunch of times, and completely factory reset the phone. None of these resolved my issue. Phone cannot find carrier updates, but I got one pop up for updating them when the device was connected to iTunes. That message closed itself and I was unable to ever get it back up. some other info info about this phone: this phone received one of apples discounted battery replacement services about a year ago at an apple store. This phone is unlocked. Ask additional questions if I left something out. Thanks!
It’s a relatively common failure on the iPhone 6, usually caused by falls or flexing. The baseband IC that takes care of radio communications loses connection to a couple of rails that break or because of oxide that built with time. Try dialling *#06# on your numeric pad, if you don’t get the IMEI code in return, a baseband failure would be confirmed beyond any doubt. It needs a board repair to get fixed.
