Samsung now gives you the option to change the screen resolution on your phone so you can save battery by not using the full power of the WQHD screen at all times.There are three screen options on the Samsung Galaxy S8 – there's HD+ (1480 x 730), FHD+ (2220 x 1080) or WQHD+ (2960 x 1440) - but your phone will default to the middle for the Full HD resolution.It’s...