Multi touch problem

Go to Settings > Display > Touch Sensitivity and toggle it on to improve responsiveness, especially if using a screen protector. If already on without a protector, try turning it off to avoid oversensitivity.

Kindly reset factory data with backup then try to it's again. If you like please accept as a solution it's help to other users also, click on 3dots in my reply section and click on accept solution. Thanks.

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