Use APKPure App
Get Air Call Answer-Incoming Calls old version APK for Android
Just swipe on the device (On Camera) then it will answer the calls.
You are busy with some works or while you in driving unable to receive the calls, no problem you can receive the all calls without touch. Just swipe on the device (On Camera) then it will answer the calls. If you want to keep in silent mode, just enable the option in settings. It will use when you unable to handle the device at anytime and anywhere.