Make appropriate configuration changes to improve battery life
- Turn backlight to minimum "on" duration. When you're done using the device, manually turn off the backlight immediately rather than waiting for it to time out and turn itself off. Turn backlight intensity to minimum brightness. You can manually change these on an as needed basis.
- Turn off all radio - WiFi, Bluetooth, GPS, 3G and 4G. This will isolate you from the internet. But you can turn it on manually if and when you require it.
- If you enable an email app, set it to NOT automatically retrieve emails. Again, you should instigate this manually if and when you need it.
- Don't load games on it - many of these draw revenue from ads, and will go out in the background and try to retrieve new ads to display, even when you're not running the game. Same thing from some non-game apps as well. Basically, load a minimum number of apps that you actually need. And try to stay away from apps that like to phone home to the mothership.
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