Monochrome is a nice idea. Windows phone is a good way to achieve the first part. Most of the apps you might use aren't available. Put the phone in "battery sav

Monochrome is a nice idea. Windows phone is a good way to achieve the first part. Most of the apps you might use aren't available. Put the phone in "battery saver" mode and things don't run in the background, so no notifications. Battery can last 2-3 days this way