Just got mine and set up as new after I iTunes installed 9.3.1 after downloading it from ipsw.me. Time to see what kind of battery life I get. I have the TSMC chip and will run mostly with location svc's off minus a bit of Waze here and there.
I'm under the impression all of them use TSMC chips....
I wouldn't crippled my brand new iPhone disabling all the services like some websites are suggesting. The difference in terms of battery life is lesser than expected.
I'm just setting location services on "while using the app" , disabled unwanted notifications and switching off a few system services don't needed (like iAd, HomeKit and share my position). Everything else is on and battery life on my iPhones always have been great.
My two cents