Mute button issue on 8210

[finkbat]

Hi all,

Had this strange problem happen recently (only just over a year old!) that when I REMOVE my phone from the holster it goes into standby! Pressing the button on the top of the phone does nothing. I have to re-insert it into the holster and then remove it again and most of the time it is then fine. Sometimes I have to put it in and remove it from the holster a couple of times to unlock.

This also effects calls as when I answer them they are muted!

Grateful for all help, as it's getting annoying now and still got another 11 months of contract left...