jailbroken , unlocked but no sigal

[rashers52]

hi

just wondering if anyone can help me , ive unlocked the phone using blacksn0w. i have an Orange sim in the iphone , by the signal it is saying Orange but no signal bars. they are all flat.

yesterday i managed to get about 2 signal bars and recived a call and message , but had to restore the phone back to newest update.

i have only just got the phone to how i want but not picking up any signal , although the phone is showing the carrier Orange up top.

i have also tried resetting network settings and turning flight mode on/off.

any ideas? thx

***FIX***
what i did was remove the sim for around 10/20 mins , put back in and now i have signal