I'm a fairly heavy user on 1520 (insider).. 12hours per day is at the absolute max duration I can get. My usage
- WhatsApp and Telegram (multiple work groups chats)
- No movies, music, games
- No usage of GPS/Maps
- No Wifi, although I would use the phone as hotspot to my laptop a few times a day.
- Black theme on all apps where possible,
- Nearly all notification and vibration switched off, very few apps allowed to run in background
- Heavy on Edge. For my most used fave sites, they get pinned to my start screen. Especially true for Facebook, that's very poor app (freezes, etc). Edge is highest on battery usage
- Photo editing (usually L.Creative Studio, Fantasia Painter, etc
- The carrier signal is strong,
- No usage of OneDrive except when I'm at home on WiFi (which is after the 12hours workday)
The 1520 is nearing three years, so overall can't complain about the battery duration (15-25 % left after 12hrs) . I was using a brand new 1520 recently, with near identical setup/settings. . battery duration was just slightly better.
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