Samsung Galaxy S4 Switches Off Automatically (DO NOT BUY)
Hi, I bought my S4 two months ago. It worked well for these past two months. Two days ago the phone switched off by itself. By pressing the Home button there was no response so i used the Power button to switch it back on. The next day the same thing repeated, but this time the phone wouldnt switch on by pressing the power button. I had to plug it to charge and only then it would switch on by pressing the power button.
Observations
1) If the battery level before it turned off was around 60 percent, it would sometimes show 0 percent charge when i switch it back on by plugging it to the charger ( this i do within 5 minutes so the possibility that the battery got drained before i try restarting is ruled out).
2) The phone would switch off at any battery level 84, 67,73, or any other random number from the 0 to 100 scale. Before it switches off it might have run for like 15 mins on battery to 4 hrs on battery at max without any problem. There is no indication when it could turn off.
3) Sometimes when i switched it back on it would show the previous battery level same as when it switched off. (if it swiched off at 60 percent, when i restarted by plugging it to the charger it would still show 60 percent) This also happened sometimes so i cant draw a pattern here.
4)The phone would never switch off when charging. (This is the only consistent thing about the problem)
5) The Blue LED flickers when i try restarting without plugging it to the charger and i see the Samsung Logo with the Samsung Start Up Tone which also gets cut short. (The phone switches off then)
6) Sometimes the phone switches on properly without having to plug it to the charger. (Confusing)
7) Sometimes if i unplug the charger when the charge level is say for example 56 percent, the charge level automatically rises from 56 to say 82 when the phone is unplugged 1 percent at a time.
8) There were no system updates prior to the first time it switched off by itself.
9) The OS is working just fine when the phone is running. No issues with the performance of the device when it is running.
Any troubleshooting
a) I am pretty sure the battery has charge physically. So i did not try checking on another battery yet.
b) I had factory reset the device as a trial and error approach to solve the problem only to feel disappoined.
If this data could help please let me know your thoughts. It is a premium phone. Great functionality. I really hate that it has a darker side.
UPDATES :
THE BATTERY HAS SWOLLEN. PLS CHECK YOUR BATTERIES. DO NOT FURTHER USE, SUBMIT TO A SERVICE CENTER. (As on 12th Sep 2013)