my phone ran out of batt and when i charged it back (on it) there's a msg saying "iphone not in use" and whatever apps that i have (e.g facebook, fieldrunners, IM) cannot be used. what do i do?

hi all,

i tried installing iphone browser but it doesn't work. the version i installed was 1.91. after installing, it says iphone browser not working and it will auto shut down. need to backup my contacts and all before i JB. Hmmmm...

one of my friend's iphone 3GS from US, unable to detect Wi-Fi connection. Sometimes it can, most of the time it can't. Both of us using iphone. When mine can detect, his can't. Anyone knows what is the problem? Mine's Maxis 3G set.

before i ask my next ques, are we allowed to discuss about installation of apps from cydia here?