My screen is oversensitive and letters and numbers jump onto the screen when my finger gets close so that it is impossible to write what I want. I tried turning on and off the phone but still the same when I turn back on. Any help or advice appreciated

My screen is oversensitive and letters and numbers jump onto the screen as my finger gets close. help

You need to re install OSX. If you have the dmg file downloaded via torrentz this is how you can create a bootable external HD or Flash drive (8 GB+)
https://discussions.apple.com/message/23957654#23957654
Peace
Harry

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