Is there a bug on IOS5.0.1? I having intermittent calling issue after I upgrade my Iphone4 to IOS5.0.1.

Hey Apple Team,

Is there a bug on IOS 5.0.1 on calling?

Recently I upgraded my Iphone 4 to IOS 5.0.1, and since then I facing intermittent calling issue which i never had before when i using 4.3.3.

I had this happen to me twice after I upgraded to IOS 5.0.1 past 2 weeks.

When I call, the phone will show 'Calling Other'...and it keeps showing that, without any tones.. But the fact is the other side already pickup my phone but hear no voice from me. I didn't know my call was picked up. And when I want to end the call, the phone not able to end the call. Since then, I not able to make any call, and even receive any call for around 30min to 1 hour time. Even I restart the phone also not able to help it. After sometimes, the phone able to make call again.

I never meet this issue before I upgrade to IOS5.

I have a friend who own an IP4s, her phone having similar issue too. and definitely is IOS5 again.

I am thinking is this a hardware issue but i suspect it is IOS5 issue.

Anyone facing similar issue?

Regards,

Lion