I hate ...
smartphones that position On/Off, and to a lesser extent Volume controls, precisely where many people grip the damn things. On/Off switches should be on the top, in a depression.
Another feature that is very handy are IR 'blasters', especially if you travel so you can load an App that allows you to off the sound or power. Four hours in Bangkok waiting for the Ho Chi Minh City connector being tortured by TVs that no one watches is a major pain.
Dual SIM is good but SD storage and battery swapping are essentials.
Biting the hand that feeds IT
