According to messages posted on Apple discussion forums, the ”
” proximity sensor on the new iPhone was causing calls to be unintentionally dialed, hung up or muted without user consent.
, which fixed the issue for some readers but not for everyone.
We’re tracking some problems with the proximity sensor, we’ll have that in the next update.
I’m sure users who were facing the issue will be relieved that Apple has acknowledged the issue (more…)

Are you facing the issue? Folks at Macworld have few solutions to fix the issue:
This will reset all network settings, including passwords, VPN, and APN settings.
All your preferences are reset, but no data or media is deleted.
appears. Slide to power off your device. When it is off, press the power button to turn it back on.
We believe that the issue is a software bug that seems to affect users who have setup their iPhone 4 from an older (more…)

“My wife and I both have the same exact problem with out phones. I was on an hour phone call this evening and my phone muted me 5 times, put me on hold and tried calling my work and then put me on hold and tried to send a text message to my work. This is very dissapointing. Ok, that last one with the text message is kind of funny. But for someone who has had apple products for years on end, this is about the worst experience I've had so far.”
(more…)

“The electronic device can include a heart sensor having several leads for detecting a user's cardiac signals. The leads can be coupled to interior surfaces of the electronic device housing to hide the sensor from view, such that electrical signals generated by the user can be transmitted from the user's skin through the electronic device housing to the leads…Using the detected signals, the electronic device can identify or authenticate (more…)