I like my smartphones bright - here's what you need to know about phone brightness

Screen brightness isn't often trumpeted from the hills when Apple, Google, Samsung, or another company puts out a new phone. But of course, it's one of those details that's extremely important in practice -- a phone with weak brightness can be hard to use indoors sometimes, never mind stepping out into the harsh midday glare. When I was living in Austin, a dim phone was a legitimate annoyance on long roadtrips, since there was no way it could compete with cloudless Texas skies.

Source : https://www.pocket-lint.com/what-you-need-to-know-about-phone-brightness/