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Somehow Wi-Fi stopped connecting on my phone. It is not a hardware issue, as it does work when I perform a reset.

What files do I need to delete to get Wi-Fi back working? I don’t want to reset my phone.

If relevant, model is Sony Arc S, using CM9.

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It shows „avoided low quality connection” or something like that. –  kinokijuf Aug 31 '12 at 8:05
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2 Answers 2

up vote 5 down vote accepted

I removed data/etc/wifi, data/misc/dhcp and data/misc/wifi and it worked.

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This is what worked for me:

  1. Turn off wifi (this may not be necessary)
  2. Remove /data/misc/wifi
  3. Reboot

Another possible option: FXR WiFi fix and rescue

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