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Microsoft Lumia 640

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How to
Troubleshoot
Using apps
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My mobile phone's battery life is short

This troubleshooting guide will take you through a number of possible causes to help you find a solution to your problem.

Microsoft Lumia 640
Microsoft Lumia 640

We found 5 possible causes:

  1. Wi-Fi is turned on
  2. Mobile data is turned on
  3. GPS is turned on
  4. The display brightness is set too high
  5. Bluetooth is turned on
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