Should I upgrade

iphone 4 16 gb black
current ios: 5.0.1

here thing not have problems, , battery life seems fine already. charge 100% before bed, , unplug it. when wake typically @ 97%. lose 3% on 8 hours in standby. think pretty good, , afraid risk upgrade , lose have.

see people having improvements, , lot of "5.1 ruined battery" threads.

in same boat me?

 

if me upgrade.

 

Forums iPhone, iPad, and iPod Touch iOS Older iOS Versions iOS 5 and earlier

• iPhone
• Mac OS & System Software
• iPad
• Apple Watch
• Notebooks
• iTunes
• Apple ID
• iCloud
• Desktop Computers
• Apple Music
• Professional Applications
• iPod
• iWork
• Apple TV
• iLife
• Wireless