Archived from Mac Observer. When Apple released iOS 4.1 for iPhone Wednesday, the company once again included a utility that allows you to measure your signal strength on your device, a utility that that had been available before the release of iOS 4, but was not included when iOS 4 was introduced earlier this year. [...]
This applies to any device that uses lithium ion batteries (i.e. laptops, smartphones). Battery For lithium ion batteries, you do not need to discharge them fully and recharge constantly. Since they don’t have the same "memory" as older nickel-metal hydride batteries, it is actually better to discharge a lithium ion only partially (10 to 20%) [...]
I did it using Spirit on a Mac. It’s definitely easier now than the iPhone OS 2.x era — that is, no more of setting the phone in “Restore mode” and running a bunch of commands. This time it was as easy as downloading, running the app, and clicking the “Jailbreak” button, which, by the [...]
I found this article on how to fix OS 3.0 battery issues with your iPhone. I have yet to try it, but it looks promising. Check it out at and let me know how it worked for you.
I found this how-to so one can sync his/her IPhone with two or more computers. It’s a hack, but it works. Check it out: http://tinyurl.com/6hxteg.