I can't hear call waiting notification beeps when I am on a call. I've had my E61 for about 6 weeks and keep missing calls. Call waiting is active on my E61 and with my carrier T-Mobile. The only way I know if a call is waiting, is to look at the display while I'm talking. Thanks for any help.

I've searched all over the Web and many are having the same issue. However, no one seem to have any solution.

I've already missed way too many calls; can't be driving and looking at the phone screen for calls.

Any help would be greatly appreciated.