Enable Power Saver Mode:

  1. Open the apps drawer
  2. Launch “Settings
  3. Under “Phone”, tap “Power” > “Power saver
  4. Select the boxes associated with the features you want to enable during Power saving mode
  5. Tap the “Power saver” switch to enable the feature

Decrease Screen Brightness and Timeout:

  1. Access the “Settings” menu
  2. Swipe to “Phone” and tap “Display & gestures
  3. Tap “Brightness level” and clear “Automatic brightness” if necessary
  4. Drag the brightness slider to the left to decrease luminosity
  5. Go back to “Display & gestures” and tap “Screen timeout
  6. Choose a lower timeout value, such as “15 seconds

Disable Wi-Fi, GPS, Hotspot, and Bluetooth:

NOTE: You can improve battery life in the long run by disabling the phone’s connectivity features when they are not in use, including Wi-Fi, Hotspot, GPS, and Bluetooth.

  1. Open the apps drawer and launch “Settings
  2. Tap the “Wi-Fi” and “Bluetooth” switches to “OFF
  3. Under “Wireless & networks”, tap “More
  4. Tap “Mobile network sharing” and turn off ”Mobile Hotspot
  5. Go back to “Settings
  6. Scroll to “Personal” and tap “Location” (GPS)
  7. Tap “Mode” > “Battery saving

Switch from 4G to 2G:

  1. Open “Settings
  2. Tap “Mobile data” > “Network mode
  3. Select “GSM only” to enable 2G only
  4. To use 3G / 4G, select “WCDMA only” or “GSM / WCDMA auto” / “GSM / WCDMA / LTE auto

Change Sync Settings and Turn off Background Data:

  1. Access “Settings” and tap “Accounts & sync
  2. Select an app to disable background data
  3. For sync options, select an account (NOTE: options will differ from one account type to another)

Minimize the Use of Third Party Applications:

NOTE: Certain third party applications can affect your phone’s battery life even if you don’t use them – assuming that the apps perform regular processes in the background. Thus you can improve battery life by disabling or removing unused third party applications.

  1. Open the apps drawer
  2. Launch “Settings
  3. Tap “Apps” under “Phone
  4. Select an app from the “Downloaded” tab
  5. Tap “Disable” to turn off the app
  6. To remove it completely, tap “Uninstall” > “OK

Check for OS Updates:

NOTE: Software updates can include battery life improvements, so you should keep your phone updated at all times. To check for new updates:

  1. Go to “Settings
  2. Scroll to “Phone” and tap “About
  3. Tap “Software information
  4. Tap “Check now” and if necessary, follow the on-screen prompts to download and install the update

See More: HTC One M9+ Supreme Camera: Tips & Tricks to Improve Battery Life