[Resolved]  HTC P3452 — Service

I am using HTC Touch (P3452) for last 2 months. Sometimes I am facing a critical problem when my phone stays in SLEEP mode. I usually press power button to turn the phone to SLEEP mode. It helps me to save battery energy (I think, every body does this). But when some one calls me, it should turn to the ACTIVATED mode autometically and play the ring tone, so that I can pay my attention that some one is calling me. But it does not wake up, no ringtone, no missed-call entry in call history register. But Caller hears a full caller Tune, so latter, caller blames me that I refuses to attend his/her call.

But, In a situation like, someone is calling me, phone is in SLEEP mode. Fortunately I press power button. Then it starts to play ring, otherwise it doesnot play tone.

Shown twice to your Service centre. they 've changed the board too, but facing same problems again...
ONE OF THE POOREST HANDSET AND SERVICE CENTRE IN INDIA
Thank you '...if you can solve my problem and for more details contact [protected]