This post was published 2 years 1 month 21 days ago which may make its actuality or expire date not be valid anymore. This site is not responsible for any misunderstanding.

From Jason Langridge:

I haven’t seen this issue myself but if you are (according to HTC) experiencing dropped calls occurring when Bluetooth is on then you are in luck as HTC have released a fix for the HTC TyTN II, Touch and S710.

Luckily it’s a CAB file so no need to reflash your device and your data should be safe.

You will need to login to the HTC Eclub website to get download it

Source: Jason Langridge’s Weblog