Are you satisfied with your phone's battery?

Smartphones have evolved significantly. My phone's processor runs at higher clockspeed(2.5GHZ) than my laptop's processor (2 GHZ). Though almost everything has evolved in a smartphone, when it comes to battery back, it sucks big time. I normally tweak my phone's parameters ( underclock and undervolt), also, my phone has a pretty big battery, as a result I get a decent battery backup. What is your case? are you satisfied?