I got my LG G4 at the beginning of July and have absolutely love it. It does everything that I need a phone to do and the removeable battery and expandable memory was a big factor in my selection.
The battery life was amazing: I don't play games on my phone, I rarely make an actual phone call, and I use a web/SMS interface (MightyText, if you're interested: quality product if you work at a computer). That being said, I'm far from a light user: I search the web a lot , text with different apps and use social media.
My battery life averaged at least 40-50 hours most of the time (heavy use taking a lot of phots would reduce that to 30-35, very light use would extend it to 60+ hours), and this has been consistent for the last seven months of use. Having a second battery is the plus, because I an allow it to die to 0% and immeditately switch out the battery.
When Android 6.0 was pushed to the phone I was hesitant, but consdiering that it's been deployed to other networks over the last few months, I took a risk and updated. BIG mistake: I've just gotten home from work and the battey is at 2% after about 9 hours. The phone felt physically warm and I checked the temperature (*#*#4636#*#*) and it was in the low 40s.
I'm quite worried that this will be unalterable and that I will have to live with this for the remaining 17 months before I can get an upgrade. I'm going to search the web for any information on things that I can try and possibly even look into if there is a way to downgrade. I would just warn people not to jump on the new update: I had NO complaints with the OS at all, and I feel that I've learned my lesson.
I will update if the situation changes. If anyone has any suggestions, please let me know!
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Thanks for the reply and the suggestion.
I've decided to give it a couple of days to settle in before I try that (just put in the second battery and am crossing my fingers). I understand that there might be things going on in the background that might be the cause of this.
Make no mistake: I'm quite happy with my LG G4, and I more intend to have this just as a statement on the web (which I was unable to find during my hasty and cursory search last night) which might guide others who are on the fence. I will be sure to post updates on the performance.
Thank you so much.
Update: my phone has had its screen off for 90 minutes and is down to 85%.
While we wait for @Meowmix's friendly contact on LG side, I do want to discuss another theory.
For your battery drainage, under your Settings > General > Battery and power savings > Battery usage
What is showing up as the 1st, 2nd and third highest usage (They are in order normally).
Sometimes, if there are apps, third party or native that are draining the batter more than your screen and android system. You have a malfunction and a simple reboot won't solve it.
@Meowmix among other users here can confirm that. Sometimes a hard-reset is required (making sure back up of all personal/needed files are done first). Hard Reset is last thing we want to do of course.
So for now, can you take a screenshot of that battery usage screen? So the community can better assist you?
It's been a week and it seems to have equilibriated itself. I'm back up to 30+ hours, although it dropped drastically on Thursday and Sunday. I'm hoping that it eventually regains its old longevity. I do remember a similar situation with a phone from a couple of years ago where an update there was a temporary but considerable reduction in battery power coupled with the phone being uncharacteristicaly and almost alarmingly warm. I'm hopeful now that this too shall pass.
Even during the dip in performance the battery usage profile looked more-or-less normal and with the usual proportions, regardless of the actual life: Cell standby and Phone idle each consuming around 17%; Android System, Android OS, and some background apps like Locale and MightyText around 8%. There really isn't much that I've noticed, but I will be certain to screencap it if it dips again.
A bit of an off-topic question: when performing a factory reset, do you have any suggestions for backing up the phone beforehand? Most of my pictuers are on the SD card, but it would really be nice if I could somehow preserve my SMS/MMS history.