Use APKPure App
Get A.Tests old version APK for Android
अपने उपकरणों का परीक्षण के लिए साधारण आवेदन.
This simple application was created for testing your devices.
You can check your microphone (record & listen), multitouch, internet connetion, dead pixels, accelerometer etc.
Also there's a list of device parameters including all important information and the small render test (that's for my personal researches tho, thanks for running it).