If you observe the Android battery graph more closely, you’ll find some other interesting details as well. For instance, you’ll know the pattern of your mobile signal strength, how often apps running in the background ‘wake up’ your sleeping device and so on.
- The coloured bars in the Mobile Network Signal indicate the strength of signal (or number of cellular bars). The dark green bars indicate strong signal (full bars), light green is a good signal, yellow means a weak connection (3 bars or less) while the red bars indicate ‘scanning’ mode meaning the device is searching for a network signal.
- If your device is in airplane mode, or when you are out of coverage area, the network signal block will be blank (white or, for some models, black).
- The Wi-Fi block indicates the time when the radio was turned on though the device may not be actually connected to a Wi-Fi network.
- The coloured strips for charging indicate the time when your Android phone was connected to the charger. The ascending slopes in the battery graph is also an indicator of the charging time.
- The coloured blocks in the Awake bar represent background apps that may be running even while the screen is off. For instance, your mail app periodically checks for new email even while the phone is in ‘sleep’ mode.
- If you notice any extended ‘awake’ blocks, it means that some battery-draining apps are keeping your phone active and should be uninstalled.
- The GPS line indicates the duration when the GPS receiver is powered on and some app or system service tried to use GPS to determine your exact location.
- Finally, the ‘Screen On’ bar indicates the actual usage time when the screen was turned on and not in standby mode.