Device Guides

Microsoft Lumia 640

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I can't use one of my apps

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. The required app is damaged or deleted
  2. There's an error in the operating system on your mobile phone
  3. You aren't using the latest version of the app
  4. You've got a new phone number
  5. There's no internet connection
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