It sounds like you have turned on one of the Accessibility settings for the phone.
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Having a fully functional device is important, and we do want to make sure that your phone works like you want, Mhoon. I would have to agree with Ann154, that this is most likely caused by an Accessibility setting being turned on by accident. What make and model device do you have? On most Android devices, you can go to Settings, Accessibility to enable and disable these settings.
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