

- HTC ONE M9 SOFTWARE UPDATE 4.27.531.6 PATCH
- HTC ONE M9 SOFTWARE UPDATE 4.27.531.6 FULL
- HTC ONE M9 SOFTWARE UPDATE 4.27.531.6 PLUS
Super quick drain, and shuts down once reached 80%, Basically, once it reaches 80% battery level, it shuts down, if you then plug in the charger, the battery says 0%. I then recharged it to 100%, and the problem persists. Not sure I understand what happened here, unless the actual process to wipe the partition cache drained 27% of the battery. (3) I have wiped the partition cache when the battery was fully charged at 100%, and after the partition charge the phone reboots to 73%.
HTC ONE M9 SOFTWARE UPDATE 4.27.531.6 PLUS
(3) I have tried the battery recaliberation steps by powering off then holding the volume up + down + power buttons for two minutes plus and that didn't seem to make any difference, although the instructions said to turn off "fast boot" which on my phone under Power settings > Battery I do not have such an option. (2) I have rebooted to safe mode, and it appears the battery drain (which runs about 1+% a minute with no active usage) is the same. (1) I have tried charging it with the phone on vs phone off, didn't make a difference. I have done a few things so far to get some clarity of the problem.

HTC ONE M9 SOFTWARE UPDATE 4.27.531.6 PATCH
I have the stock phone, that came with Android version 7.0, security patch level 2-1-2017, software number 4.27.531.6. When the phone gets it's sudden death and when it does come back, half the time it will remove all the widgets I have on the screen. So it seems his phone is having the early stage of the same issue, only it's not as bad as mine, YET. Then last week, out of the blue, he told me his phone shuts down suddenly at 30% for no reason, and on powering back up it shows 4% battery. He gets about six hours out of it, so the theory is my particular device may be defective. While I have been struggling with this, my son's phone - identical model, identical carrier, seems to run fine. However when I go to one of those IMEI checker and typed mine in, it shows the warranty period is over, and was over BEFORE I even made the purchase. I have contacted HTC by email twice since the phone is still supposedly under the original 1 year warranty, but no response from HTC.
HTC ONE M9 SOFTWARE UPDATE 4.27.531.6 FULL
This translates into about 20 minutes of usages per full charge. At this moment, eight months after initial purchase, the phone will die when it reaches 82% power. Basically, any time the battery indicator reaches 40% its an immediate death. Within three months the battery went from last 4-5 hours to only 2 hours. My M7 could last a whole day but the M9 lasts about 4-5 hours max on moderate usage which is mostly browsing, calls, text, whatsapp with Location off, BT off, even WIFI off at times. Right out of the box the battery performance was a bit disappointing. One phone is for my use and the other for my son. My carrier is Simple Mobile which is a MVNO of T-Mobile. I purchased two brand new in box Not refurbished HTC One M9 (T-Mobile) from Amazon in May of 2017.
