Hey guys, I've this problem and I hope you guys can help me out...

I've an iPhone 3G (Maxis Set) and I have been experiencing this problem since the day I actually bought this phone 6 months ago.

Occasionally (and lately it has been increasing) when I want to call someone, it automatically hangs saying 'call ended' and I have to try 4 - 5 times until I get the guy on the other line...which in turn only lasts for 5-10 seconds and then disconnects again.

Then there's the problem where people can't reach me, I've noticed that when I'm browsing and the phone uses any data network (Edge or 3G) and when I actually finish and close safari...the (Edge or 3G) sign changes into a circular blue dot...

When its in that state...neither can i receive calls for exactly 5 - 10 minutes...its like my phone is shut off (but then again my reception is full)....

I really don't know if anyone has a solution to this..(my friends told me to take it to the service center) but i didn't yet. My iPhone is jailbroken..and I remember when 3.1.2 came out, I told to myself why don't just update it and never jailbreak it again so that I don't get this problem: but whatta ya know? It still persists...

So please guys help me out! (And thanks in advance!) or else I guess its the service center (and please let me know which one to go to!)