Cat B15Q abnormal battery drain

[Javaheryz]

From today, my Cat B15Q (4.4.2, with two SIM cards) started draining battery abnormally fast. Until yesterday, it battery was able to last 4-5 days, including phone calls and SMS. But when I unplugged it today, its battery lost about 30% during 3 hours, without any calls or messages. In fact, it had 70% last night and exactly nothing this morning! No apps were installed/changed, no settings changed, the same charger used before. Cell standby and Phone idle consume about 40% each and Android System about 20%. There is nothing else. I use this phone only for calls and SMS and neither mobile data nor WiFi aren't used at all. I have another Samsung A7 2016 dual SIM with two cards from the same network operators on Cat B15Q, having no problem. Please help.

 

[B. Diddy]

Welcome to Android Central! That's very high Cell Standby percentage, which usually means you have poor cell signal. Poor signal is notorious for draining battery.

It would help to see some stats. Charge up to 100%, then let it drain to 20-30% with normal usage, without charging in between. Then show us:

1. The main Settings>Battery screen.
2. The fullscreen battery graph screen (which shows Awake time and Cell Signal Strength).
3. The Screen category (to see total Screen On time).
4. The Cell Standby category, if present (to see Time Without Signal).


http://forums.androidcentral.com/ge...ide-how-post-screenshots-android-central.html
You might have to install a 3rd party battery monitor, like GSam Battery Monitor, to get the Cell Signal Strength graph.