Android 8 or above\n\n On your device, tap Settings > Apps. Tap Special access > Install unknown apps. Tap the browser from where you will download the APK, such as Chrome. If prompted, toggle Allow from this source on.

1. On Android device, navigate to 'Apps' > 'Settings' > 'Security', enable 'Unknown Sources', then tap 'OK' to agree to enable this setting. This will allow the installation of third party apps and standalone APKs.

to fasten something to a wall using a pin: The exam results have been pinned up on the noticeboard.

A pin-up model is a model whose mass-produced pictures and photographs have wide appeal within the popular culture of a society. Pin-up models are usually glamour models, actresses, and fashion models whose pictures are intended for informal, aesthetic display, such as being pinned onto a wall.