I got you yesterday said that many users reported that ultrasn0w causes a dramatic drop in battery life immediately after installing ultrasn0w 1.2 from Cydia. It is possible that the problem is from the Dev Team and that a new version of ultrasn0w will appear soon to solve it. Until then, if you turn off the internet on your phone, you will find that the battery "drops" as much as before, that the terminal no longer heats up/etc. It seems that the whole problem was due to the fact that the phone was connecting to the Internet and making continuous traffic, one user reporting that he made almost 200 MB of traffic overnight. In addition to the Internet, it would be ideal to close PUSH Notifications, although if you do not have applications compatible with this service, it will not even be activated.
To turn off the internet, go to Settings>General>Network and set to Off Cellular Data. When you want to surf the Internet, go there and set the option to on.
In addition to the problem with the Internet, it seems that ultrasn0w has another problem with GPS, more precisely, some users reported that they can no longer locate on the map after installing ultrasn0w. The iPhone uses the integrated GPS to locate it on the map, but it also uses AGPS technology which, in addition to the GPS chip, also uses the mobile phone network for the most accurate location. Probably ultrasn0w affects this service and that's why the GPS doesn't work. I don't know yet about a possible solution for this problem, but I will let you know when I find out.
