Android 10 Q may bring swipe from side gesture to augment the back key

The days when you had to root, jailbreak or install third-party apps in order to avoid stretching all the way up or down while holding the phone with one hand are now gone, and every manufacturer is coping with "all-screen" phones gesture navigation in a different way. 

Apple's non-customizable but fluid and simple gestures on its ...

from PhoneArena http://bit.ly/2VoTxTS