okay so i charge to 100% last night and use it till now, this is what i got:
mainly use to listen music via bluetooth earpiece, browse web and fb for today, that's about it.
Dual network, AFAIK, M1 drains battery upon the phone is left on standby probably due to the lack of fast dormancy, my guess lah.
Whenever I checked my battery usage, the first one always 'Android system' instead of 'screen'. Then the battery was drained like 1-2% each hour.
That's why i ported to singtel after 10 years.
I'm not sure on circles line but maybe the same too since it is tapping on M1 infrastructure?
Why not using wired earpiece? BT earpiece is not healthy lol.
Your SOT is 303mins and have used 67% battery.
303/67= 4.5mins average drain for every %.
For fb, are you using the standalone app?
What browser are you using?