Chosen Solution
Hey everyone - bit of a weird problem… MY GPS / Wifi / Bluetooth were all gradually getting worse over a couple of weeks. Airpods would only work within 6 inches of phone. GPS accuracy was off by 200ft. After some reading here I decided to replace the antenna flex cable and cover, which instantly solved all the problems! Later that day the phone randomly powered off. I booted it back up. A few hours later it did it again… uh oh… After a charge the phone is then stuck on 100%. I perform a full restore from itunes - still stuck at 100%. I drain the battery until the phone powers off, then charge. It jumps straight back to 100%. Today the phone died (still at 100%) and now won’t accept a charge or turn on. It displays the red battery symbol when I connect it to power, and it will happily restore from itunes, but then just refuses to boot up - just displaying the red charging icon. If I disconnect the battery but leave the charger connected the screen still shows the icon, so I know some power is coming from the cable. It will talk to itunes, so I know the port/cable is at least mostly ok. The battery is original and has always been fine, so it seems like a stretch to assume that it happened to die at the exact moment I repaired the antenna… I have taken it apart three times to check all the flex snap connectors - can’t see anything wrong. Anyone got any ideas what this could be? I’m worried now I can’t take it to apple and pony up the $300 for a replacement.
I assume you mean you replaced this as well and that you removed the logic board completely to do so. Normally, I would suspect the battery gas gauge line but on the iPhone 6, the engineers have done a good job of tucking away the filters out of harms way. I would take a close look at the battery connector to see if the center pins are damaged or not properly connected to the logic board. You may have pried them loose. Otherwise, the logical thing to try is a new battery. I would also test the battery with 3uTools (www.3u.com) to see what the design capacity is. Your phone is 3 years old so it’s not inconceivable that the battery is coincidentally failing.
