Samsung S6 my battery drains fast. also

[Android Central Question]

what does it mean a plus sign inside a circle on top of my screen?

 

[B. Diddy]

Welcome to Android Central! The plus sign inside a circle is the Data Saver icon.

Regarding your battery, 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.