Touch Screen Test - Apps on Google Play

Draw a point where you touch.

Accessibility testing - Accessibility on Android

Test Multitouch - Wolf McNally

Multi Touch Test - Apps on Google Play

6 Touch Test Apps To Check the Touch Screen of Your Phone- Dr.Fone

Multi Touch Test - Apps on Google Play

Integrate the Google Play Billing Library into your app, Google Play's billing system

How to Run Diagnostics on Your iPhone or Android Phone

Touch Screen Test – Apps on Google Play

iPhone vs. Android: Which Is Better for You?