Also question is, can you record video while phone is locked?
Secret video recorder (SVR)The app does show a notification during recording but if you trigger it when your phone is locked, you won't see it. This app can also record calls and can go over that 4GB limit within Android with a little tweaking.
Subsequently, question is, does Android have a built in screen recorder? With Android Q, you can take advantage of Android's built-in screen recorder any time you wish to share your screen. This feature will meet the needs of most of you, with only the basics that will let you record, pause recordings, stop and save, and, of course, share.
Regarding this, can you record on iPhone with screen off?
Recording With Your iPhone Screen Turned OffYou can record video and/or audio with the Camera app on your phone, but of course this will usually be quite obvious to anyone who looks at the phone – they'll see the Camera app running on a brightly-lit, active screen.
Can you screen record passwords?
[TIL] Screen Recording continues to work when locked, but won't record your passcode. If the screen stays off for too long, the recording stops. It still records passwords in web forms where the most recent character pressed is revealed for 1s. Also, it reveals what buttons are being pressed when typing on the keyboard