iPhone 6 screen replaced & it won't charge, stuck at 1%, no service
I got my iPhone 6 screen professionally replaced at a third-party store (someone other than Apple) after it flew out of my pocket when I jumped and the screen smashed, the top of the screen also popped out. The phone worked fine when I gave it to them other than damaged screen, it's now super laggy, it can't get cell service, the battery is stuck at 1% and it seems to not charge (I think it does charge as I drained the phone and plugged it in and it eventually turned back on but very quickly died again). I will be taking it back to where I got it fixed tomorrow but I was wondering if there was a fix I could do myself before I do take it back? Can't find anyone online with my exact issue.
P.S. The phone actually worked fine when they gave it back to me (other than it seemed to not charge). These problems occurred after restarting the phone (the restart also takes a very long time) which is where the battery went from 34% to 1% after the restart and I lost cell service (it is stuck on searching for my provider)... the phone wasn't that laggy at first after restart but is now barely useable.
Is this a good question?