My htc desire 820 switched off all of a sudden even though charge was around 75%.

[Android Central Question]

Checked in few service centre, unforfunatly got replay saying that it might be software problem since I have purchased phone in other country they cannot help me. Kindly help .

 

[belodion]

I don't know what tests they did, and you haven't told us that, but from your description it could be a hardware or software failure. The first thing to check is the battery, but perhaps that has been done already?

 

[Rukbat]

Did it eventually turn back on? Maybe after charging it for a while? If so, it would be a bad battery. (Phone batteries can develop dendrites when they're at 100%, so the fact that it was at 75% wouldn't matter. And a large enough dendrite would short the battery long enough to shut the phone off.)

If they couldn't bring the phone back into operation, I can't see how they could determine that it was a software problem. They could guess, but they'd most likely have been wrong.