By A Mystery Man Writer
Back button in iOS PWA - support - Discourse Meta
interface design - Can we put back button at the bottom in iOS app
Navigation with Back and Up
Android back button not working - ionic-v3 - Ionic Forum
Soft keys - Back Buttons - Apps on Google Play
Where is my back button? : r/iphone
feat] Custom back button/gesture behavior on Android · Issue #8142
How to Fix App Not Close When Press Back Button in Android
Navigation Control Bar : Back Button::Appstore for Android