Answer 1

Hello. See possible reasons below.

1. Internal storage is full and coursing the tablet to freeze.
2. Touch screen may be some how defected.
3. Touch screen may be not connected properly.
4. It could be hardware related issued.
5. Liquid Damage.

Possible solution.

• Soft reset your tablet: Press and hold the power button for 15-20 seconds or until your tablet restarts.
• Reset your tablet to factory default.
• Open the tablet and clean the main board using a methylated spirit
• Replace the touch screen' buy here http://parts.satechhelp.co.za/