4month i was able to make calls
but couldnt recieve any call
then i left hope for iphone..
but suddenly 2day ithought lets give it
once more try..then i restored iphone with itunes..8.2
then jailbreaked iphone with redsnow..
then after jailbreak i had some problem
with cydia in installing all sources
but later got fix with cydia..by when urcydia completing update
dont let ur iphone to go on sleep after few second keep on pressing the sreen
so then u wont have the problem with donwload update..
so then i tried reboot then saw no service again cant find
my carrier.(i am from asia region) then suddenly i remember that
my sim had a cover from rebel sim..then i removed the rebel sim cover from sim
then inserted my sim again i say i m with full network
no problem wiht incoming call or outgoing..
everthing works fine now...
now iphone is iphone...