Lower your screen brightness
Most devices automatically adjust the screen brightness depending on ambient lighting, but you can override this by manually changing the brightness in your device’s settings app (you may need to uncheck automatic brightness). Slide the brightness to the left or right until you find a setting that is dim but still comfortable to your eyes.
Turn on Power Saving mode
Most of today’s devices have a power saving mode built in for those times when you need to squeeze and extra bit of juice out of your phone. On the majority of devices this will limit the processor speed and number of cores used, lower the performance of the graphics processor, dim the screen, and turn off some extra features like haptic feedback.
Turn off Haptic Feedback
Haptic Feedback uses the vibration feature of your phone to provide you with physical feedback when you touch things on the screen. One of the biggest areas where you can feel this in action is with the keyboard. Every time you press a key, the phone will make a slight vibration. If you do a fair amount of typing on your phone then this can slightly impact your battery life.
If the power saving mode on your phone doesn’t turn off haptic feedback for you, or if you don’t like using your phones power saving mode for whatever reason (because it limits performance for example), then turn off haptic feedback on its own.
Use a dark wallpaper (for devices with AMOLED displays)
AMOLED displays are unique in that when a pixel is black it is turned completely off, therefore drawing less power (in comparison to a traditional LCD panel where all of the pixels are constantly on). If your device has an AMOLED screen (like many of Samsung’s high-end Galaxy series or the BlackBerry Q10 for example), set your wallpaper to something a bit darker. It’ll help save power and you’ll channel your inner vampire too!
Close background apps
Apps use processing power and consume memory, even if they’re just sitting in the background. If you’re trying to conserve battery life, make sure that you close any apps that might be running in the background to free up memory and lower processor usage.
Use Wi-Fi for data when cellular reception is poor
Your phone uses more power when you are in a poor reception area since it needs to work harder to maintain a connection to your carrier’s tower. If your phone is syncing data every half an hour and you’re browsing the Internet over a poor connection it is going to drain your battery faster than if you were in an area with great reception. You’re better off to turn Wi-Fi on and connect to a local network if at all possible, which will provide you with a faster connection and help save battery life too.
Use HSPA/HSPA+ instead of 4G LTE
4G LTE provides blazing fast data speeds and low latency. It does however use more battery, especially if you’re inside where the signal isn’t quite as strong as HSPA (since LTE frequencies use don’t penetrate through concrete and other building materials well, and your phone has to work harder to maintain the signal as mentioned above).
If you need to save battery life and can sacrifice a bit of speed, drop your connection back to HSPA/HSPA+. To do this on a Samsung Galaxy for example, you would navigate to Settings > More networks > Mobile networks > Network mode, and change the network mode to “GSM/WCDMA” or “GSM/HSPA” (the labeling can be different depending on your phone).
Note: The ability to change the network mode may depend on your carrier and the type of device you are using. As mentioned before, check your users manual for exact instructions.
Top up instead of running your battery flat
Back in the day rechargeable batteries were based on something known as Ni-Cad, which suffered from a memory effect. This meant that if you constantly drained your battery to 60% and back up to 100%, you’d eventually lose over half of your battery’s capacity.
Today’s devices use a technology called Lithium Ion, which does not suffer from this effect. However it’s still possible to wear out a Li-On battery by putting it through many charge cycles.
A charge cycle is essentially when you take a battery that is fully charged, completely drain it, and then charge it back up again. This wears out the battery over time and you’ll find that the capacity of the battery will begin to diminish.
With Li-On batteries, it’s better to “top up” when possible. So if your battery is at 50% at the end of the day, plug it in over night before you go to sleep and let it charge back up. By doing this, you’re only consuming half of a charge cycle and pro-longing the life of your battery.
Why is this so important? More and more devices today are coming with non-removable batteries (such as Apple’s iPhone and HTC’s One), and replacing thee battery can be expensive since the phone needs to be physically disassembled to do so.