Posted by a reviewer on Amazon

I get more than 4 hours of screen on between 5060

Posted by a reviewer on Amazon

Battery is very bulky but it then it is almost triple capacity

Posted by a reviewer on Amazon

The case it comes with is flimsy and the battery doesnt fit tightly inside meaning even the slightest of bangs like putting your phone on the table too hard means it will turn off

Posted by a reviewer on Amazon

It will make your phone bigger and it will make your phone heavier

Posted by a reviewer on Amazon

That should not be complained about as its pretty obvious that this will happen

Posted by a reviewer on Amazon

Onto performance first use and this thing as done me just over 2 days with very heavy use about 10hours screen time wifi data gps and still had 18 left

Posted by a reviewer on Amazon

Makes the too thin s4 a chunky easily held itemyes it makes it heaver but not unacceptably so the replacement back is actually a case which is high grip and edge protects the phoneohyeah did i say it last for days you can leave the wifi bluetooth etc on it still lasts for 3 days on business usemakes the s4 a proper business phone as well as a smartphone

Posted by a reviewer on Amazon

This has been the best buy i have had for a while has made my phone from something that would comfortably last most of the day to a phone that will last all day playing music for an hour being used as a gps for 4 hrs and watching videos for a couple hours and still has battery left