The main problem of running latest firmware on iphone is that when every we jailbreak the latest firmware on our iphone 3g, 3gs and 4 or on the ipod touch 2G, 3G and 4G our iphone and ipod touch becomes very slow. To avoid this problem you have to follow these steps so that you can run your iphone as fast as possible Battery timing is one of the main problem in the iphones and ipod touch. You can increase you battering timing by changing the SB Settings. How I increased battery timing of my iphone.
I always used to:
1. Off the location setting to be using maps and Yelp. Because it is so quick to turn on and off SBSettings no reason to take all the time and you will see a significant expansion of the battery life of this first board only. One more thing that it may be possible different firmwares has different settings. 4.3 jailbreak iphone 4 and iphone 3gs jailbreak 4.3 (which will be release soon) may increase your battery timing.
2. Turn off wifi when not somewhere that you are using wifi. Having wifi constant exploration and trying to connect to unknown sources wifi drains the battery. SBSettings it again with a quick lever so there is no problem by turning off most of the time.
3. Adjust the brightness of the screen. In the darkness there is no reason to have the screen on full brightness unless you are using the iPhone as a flashlight. Keep the screen brightness down will do wonders to extend its life.
Why jailbreaking an iphone is Good:
I know there may be some little problems come from apple company 1-e that your warranty will expire.
but there are many bebefits of jailbreaking an iphone.
1: you can easily install any theme to your iphone.
2: You can enjoy latest and cool properties and functions of new firmware ( As ios 4.3 firmware have many cool functions).
3: there’s a program that lets you run any program in the background
4: there’s an app that lets you access your iOS device via SSH and you ought to change the default passwords if you turn on SSH.