hi there seems you've replaced the charger port with a dodgy replacement, which is why it will not fast charge or be recognised by a pc. hope this helps, only way to fix this is by purchasing a legitinmate replacement from samsung directly or from a trusted seller

I had the same problem and with the iPhone 6 this is a very unknown issue and I researched into it and found this. Something may of come loose connector wise check thembut in setting under wifi address it says NA then yes try those but I reckon it's the wifi chip has benn moved from its place on the motherboard, replace that and it'll be good as new, Hope I helped Regards Lucas

I had the same problem, if the Bluetooth wheel is spinning as well and in settings under wifi address it says NA you'll need to replace you wifi chip, YouTube how to replace iPhone 6 wifi chip and that tell you how to do it, however it requires soldering skills and a lot of effort, best bet if you inexperienced is to take it to a repair shop tell them the problem and get it done there Hope I helped Regards Lucas

It's the wifi chip, common problem but not so much an easy fix, it requires soldering skills time and effort, best bet is YouTube iPhone 6 wifi chip replacement and that'll tell you where the chip is on the board, Hope this helped Regards Lucas