Intermittent Cell Signal Issues Persisting After Troubleshooting

I reached out to Jessa at iPad Rehab and she believes that the BGA on the Baseband Chip is failing and that it would need to be reballed. She said that it was a staple failure on the iPhone 6 series. This process would be similar to that of the Touch IC except since that the Baseband is married to the motherboard it can not simply be replaced it must be reballed.

"Hi, the problem is caused by the baseband IC chip. You can double check this by dialling *# 06# If the screen is blank then its this chip. If the IMEI comes up (it will only show when you have a connection to the network), then its this Baseband chip. Checking under general settings will always show the IMEI even if the baseband chip is faulty.

The phone get bent a little in usage and back pockets, which breaks some of the solder connections under the chip. The only way to fix this is to remove the chip, clean all the old solder off, then reball/solder and refix the same chip which is married to the board. Trying to heat the chip and giving it a nudge will not work as you need to repair 2 specific solder points which will have already been cracked and damaged. This is a very skilled and specialised repair. Hope this helps. KH"

"I have a theory as to what could be causing this issue as it is happening on my 6 plus too, all the hardware seems perfect and all software fixes have been tried.

I have noticed that the loud speaker module is acting more magnetised than normal at the bottom of the phone so much so that the magnet can pick up objects through the screen, something which I had previously not noticed.

With a strong enough magnetic force in the presence of the cellular antenna hardware connection at the top of the loudspeaker connection this could be causing signal interference on the cell antenna.

I do not have parts currently to test to see if this is in fact the cause unfortunately but this could be the cause."

why is my cell phone slow to respone whenI type a word its takes time to appear? LGK40 PHONE THEY SAY ITS AN OLDER PHONE? IS THAT CORRECT?