How to Bring Back the Menu Key on Galaxy S5
Samsung decided to change the functionality of Galaxy S5's 3 touch buttons and Menu Key is no longer one of the options, as "Showing Recent Apps" ...
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HTC One uses a compass sensor to help you find the direction. When compass in not available the phone shows notification. Disable compass warning on HTC One by doing as follows:
1. Open "Settings" app
2. Go to "Location"
3. Unmark "Compass Warning" to disable notification (mark it again to enable the feature)