Words streaming down the right side of Xperia S

[Snagprophet]

Hi, I've had this issue where my dad's Xperia S has words and code streaming down the right side of the screen, also creates a dot where you touch the screen in a cross-hair style. Does anyone know what this is? It looks like it's something related to calibration options but I've not seen anything like this before.

Thanks.

 

[gillsfankev]

If you look in the developer options in settings there will be an option to until from there

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