My iPhone 4S battery life is terrible, Even with iOS 6.1.1

I have had terrible luck with my battery since last iOS upgrade. I just spent $7 on an OEM battery and took 5 minutes to replace my original battery. I easily get 12-15 hour run times out of my phone now.

Try calibrating your iPhone's battery. Instructions are at battery saving tips article

After seeing my colleagues iphone battery issues, I never buy iPhone, only iPads of which I bought two. I refuse to upgrade to iOS 7 and my iPads work fine with good battery life. Apple is not interested in improving their batteries. They just want customers to buy a new phone every year or two. Btw I use Samsung phones which allows customer to change to new batteries and Sony xperia with excellent battery life.

Well of course your iPad will get better battery life. They are much larger. A larger enclosed allows a larger battery.

Hi sir iPhone 4s battry problem plise call me 7411743557 battry is problem

This is a user forum. No one here is going to call you. Posting your phone number on a public forum is not the smartest thing you can do...