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The Oppo R9m (also known as the R9 Plus) was released in March 2016. It features a 6-inch 1080p display, and is powered by a Snapdragon 652 Octo-core processor alongside 4 GB of RAM.

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Middle button and navigation button stop working

i was just using my phone when my navigation buttoning stop working

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could be:

  • Software problem
  • Damaged control panel

Have you tried factory resetting/ restarting the phone?

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