I ran Jailbreakme.com from my iPhone 3.whatever, installed Cydia, then installed SBSettings, Backgrounder, and ProSwitcher.
I’ve now got the ability to background tasks, enable and disable screen rotation at will, change screen brightness with just a few clicks, see the precise percentage of charge remaining
So far, it seems to be working fine. The most annoying thing is that it takes a long time to load Cydia each time I want to go shopping. But that’s it.
Screw you Steve Jobs for not allowing these features inside your walled garden willingly. This will be my last Apple product.
Lifehacker has good things to say about Jailbreakme.
I am still bothered by my phone running slower and slower over the past few months. I noticed that when I run my phone in Safe Mode, it is much faster. I might leave it in Safe Mode forever. To get into safe mode, start up SBSettings, click on “Power”, click on “Safe Mode”.
When you are in safe mode, multitasking doesn’t seem to work. I’m not sure yet which I prefer, having multitasking (and a crappy slow iphone) or having a fast iphone.