Chosen Solution
Hello you guys, my iphone 8 plus have some problems that i cant figure out. when i am calling with a person , i hear sometimes static noise , also the other person cant hear me well when the static noise appear, when during the call i put it on speaker everything is fine no problems at all. my wifi network is also a little bit poor, when i search for network i see all my networks with good connection but after a few sec the wifi networks resets, and thre are no more networks, this is probally logic board damage after a fall or when the battery Get lose i have to replug it in. i hope someone can guide me the right way or know what it is ( phone is completly refurbished also, ( battery, lcd, housing) phone is heating up at the top right corner when playing games. and sometimes at the dock connector side when playing sound.
who refurbished it? sounds like you have poor connections at a guess, try reseating all the flex cables and make sure all the plates are on, also check the wifi antenna is grounded to the shell at the top of the phone. as for the static maybe replace the front cam flex and earpiece.
