원문 게시자: Harold ,
I’ve seen a number of devices that have hardware stop working after upgrading to ios 12. Batteries are most common, but if it happened after the 12 update, I would NOT anticipate that a restore would return functionality. Take it to a reliable repair shop with some integrity and you should be out less than a hundred dollars and the repair is quick, or if you’re comfortable/daring enough. buy the part and follow one of the guides for repair. If you see anything that looks like chalk/toothpaste on any connections, clean VERY well with alcohol and swab. I mention this because the number one reason I replace customers front facing camera is because the earspeaker area got some moisture in through the mesh and doesn’t kill the whole phone, but certainly causes issues.