Chosen Solution
I recently changed my phones display and when i tried to turn it on phone kept restarting and showing 1 to 4% battery, after restarting even while it is on the charger there isnt that charging symbol next to the battery percentage in the corner. I replaced the battery but it still shows “Service” in the battery health and keeps restarting the same way like it used to on the original battery. Update (08/07/2019)
Do you guys think this is what causes the problems with charging/rebooting?
Have a look at the small space between battery connector and the metal shield, there are a few small components that may get dislodged when prying off battery. This might be your issue, you’ll need a good light source and better some magnification too..if you see empty solder pins that is it. I enclose a picture for reference.
By seeing the history that is related to the SWI problem ,not connect battery properly or track is broken. Observe carefully that you got the solution .
