My biggest problem with my current smartphone is...

Whether it's an impotent display that fails spectacularly when brought outside, a sluggish processor, buggy software, or unsatisfactory battery life, it's fair to say that all of us have one or several issues with our smartphones that we wish didn't exist. Sure, smartphone makers love to boast about the no-compromise approach they employ when designing their gadgets, but the real world picture is usually different — sometimes event at the flagship level.