[Markymodem]

I have a M7, recently it has been having a funny turn, it will lose about 30-35% of battery while turned off

Does anyone think this is right, it is still under warranty and is only about 6 months old.

I am currently going through stages with htc support such as battery test (which it passed just about), safe mode running and system restore.

any ideas?

[Gigabit]

Try a factory reset. If that doesn't help, contact HTC.

[lightspeed2398]

By turned off do you mean fully turned off, quick boot turned or just screen off? If it's the second of the two then try turning that off or if it's just screen off then you might have a "wake lock" meaning that an app on your phone is stopping it from entering deep sleep mode and is keeping the CPU running, wasting battery.

[Markymodem]

completely turned off....and tried factory reset.....just got to try safe mode now....but can't see what that will do if it is completely off....

[lightspeed2398]

Does it happen every time or just sometimes? Someone please correct me if I'm barking up the wrong tree but I've had this on batteries that are dodgy where rebooting the phone causes the phone to kinda re-examine the battery and it mis reads it. The last phone it happened to me on was a S2 but I know that even on newer phones it still happens. If it's happening when it's completely turned off then I would be 95-99% certain it's a dud battery.

[Markymodem]

turned it off while in bed the past couple of days and its lost 30-35% both times, just been reading about fastboot and how it keeps data stored in the ram while off but uses power to power this....but no option to turn fast boot off in lollipop...

[Kenny Maclean]

Loosing that amount doesn't sound right. I leave my M7 on all the time so can't advise on that, however.....

How long do you leave it off for it to loose that amount?
and
What version of the firmware / OS do you have installed? (menu > about > software information top line will give you the version number). You can select updates to check if there is one if you are running a version lower than 5.02.

Have you recently updated it around the time you started having these problems.

Some people are reporting issues with 5.0 (See as you can hopefully see by googling HTC android 5.0 battery. Apparently version 5.02 fixed some of those bugs, but don't know what bugs.

Good luck.

[Markymodem]

its about 6 hours turned off to lose that,

android version 5.0.2
htc sense 6.0
software 7.19.401.2
htc sdk 6.55

updated a few weeks ago to the 5.0.2 version

[Kenny Maclean]

On standby, 30% over 6 hours i would agree with, but not when totally shut down with no apps running.

As I said I'm running the same on the same phone, so if i remember tonight, although i can't turn it fully off (the freelance always available lifestyle ) I wont plug it in and see how much power it looses in standby mode (power pressed 1 briefly to turn off the display).

If i forget just post a reminder in the morning or a P.M.

Edit: Is the battery definately reaching a full 100% charge as desplayed on the screen, in adition to the LED change from red to green?

[Markymodem]

Yeah it's 100% on the screen and green led

[Kenny Maclean]

As promised. My M7 (also running 5.02) was fully charged by midnight, and after 10 hours on stand-by (on but screen off, and able to ring if someone calls it) it is showing 94% left so only a drop of 6% in 10 hours.

As you said you actually shut it down and it drops, this rules out a problem app or background syncing, so the thing i can think of is a problem with the battery not holding it's charge.

[Kenny Maclean]

One other thing to look at is the actual power usage:

Settings>power>battery usage

[lightspeed2398]

I agree with Mr. Maclean, once the phone is turned off there is no software problem that should fix it. It's most likely a hardware problem. If it's only 6 months old then I would try and RTM it with HTC.

[Markymodem]

thanks for all the replies.....i've tried shutting down in safe mode, system wipe and restore...still 30% loss......think its time for htc to pick it up.....lol

[Markymodem]

update....been in for repair...new battery installed

guess what?.....still the same, back in for repair it is then...getting fed up of this phone now.....really put me off buying another htc...

[Soundbox]

Quote:

Originally Posted by Markymodem

update....been in for repair...new battery installed

guess what?.....still the same, back in for repair it is then...getting fed up of this phone now.....really put me off buying another htc...

Don't stress - all electronic goods have problems at one time or another as they are so complex. What you may have is a physical drain caused by a component going faulty and drawing current that the phone can't tell you about (maybe in the battery maintenance circuits). Go back to HTC and tell them that the issue, ask what you need to do and who to contact. The M7 is a very good phone and is being supported by HTC so well worth fixing.

[Super Bandit]

That's a shame op. My M7 has lasted me well for nearly 2 years. Wish it was easier to change battery though