Battery drain on factory reset and idle P6P 5-6% per day

ixis

So I installed GOS on Pixel 6 Pro, used it (no SIM/eSIM, just wi-fi), did updates etc. and then I noticed the battery dropping 5-6% per 1 idle day. I then tried switching from battery optimized to battery restricted on almost all apps in all profiles, rebooting, not activating any additional profiles (staying in owner profile), going into airplane mode, switching off wi-fi (location scanning is off too) and it still drops the same as before

Now I completely factory reset the system, it has nothing, no additional apps, no profiles (multiple users off), no SIM/eSIM, no wi-fi configured, airplane mode on, wi-fi off, both location scanning off... I don't use the phone just check every 24h and see that battery is down 5-6%

How is this possible? I expect the phone to do nothing and thus drain only the minimum battery. 5-6% while idle in this scenario can't be the minimum, can it?

mythodical

ixis I don't feel that 5-6% battery drain per day is unusually high at all. On the contrary, I'd say that's very good. Even when idle, processes are still running (edited this, as I saw you mentioned airplane mode). At that rate, the phone would operate for over 16 days on a single charge. What kind of battery life are you expecting from a smartphone, and what are you comparing it to?

ixis

I am talking about an idle and factory reset P6P with no files, apps and no connectivity only, so kind of an offline smartphone at this stage.

If I was using it for a few small things like checking emails for 20 to 30 minutes a day and having it stay connected to the internet but with display off during the rest of the day - then yes I would also say that its very good.

However, in this scenario I expect the phone to literally do nothing.

I had an older Huawei phone that I mostly switched into airplane mode expect once a day to check. It had even some additional messaging apps installed. So here, I was actually using it more that the GOS P6P. And I only needed to charge it once a month, which makes it loose battery at around 2-3% a day. But that was an phone with stock Huawei android with bloat facebook/Google apps preinstalled. I would think that a cleaner OS like GOS on a new device with a fresh battery should at least do the same, but actually better.

233328

Chiming in just to say that I have also noticed high battery usage while idle+offline compared to what I would expect, also losing about 6% of battery life per day. On my Pixel 6 it has been this way since I got it and it was like that on stock android, too. For comparison, my old smartphone with LineageOS only lost 1-2% per day when idle+offline, ant its battery was significantly smaller than the Pixel 6's battery so the difference is even bigger than it seems. I think this is very perplexing but not sure anything can be done about it.

ixis

233328 Thanks for chiming in. Did you have any other OS except stock and GOS on the pixel for comparison? it so weird that it loses 6% with no expected activity while Google is explicitly marketing Pixels battery life...

abcZ

5-6% per day is absolutely nothing at all. Even though the phone is "idle" and has all radios turned off, it still has timers that wake up the CPU periodically for various housekeeping tasks, and these will definitely consume some power.