Apple appears to have fixed the widely-reported iPhone 4 proximity sensor issue in the latest iOS 4.1 beta 2 update.
The latest beta also includes a baseband update (AT&T 7.1), which seems to fix HSUPA upload speed issues, which slowed video and photo uploads to a crawl.
Despite reports to the contrary, our tests show that the proximity sensor issue appears to be have been fixed. (MacRumors says the issue hasn’t been addressed).
In numerous tests, I couldn’t get my iPhone 4 to hang up a call. Previously, the iPhone was plagued with proximity sensor issues. It would constantly hang up calls when I held the phone next to my cheek.
But after installing the iOS 4.1 beta 2 update this afternoon, I couldn’t force the iPhone to hang up calls when lifting it up to my face, no matter how hard I tried.
I stress that the issue only seems to have been fixed. I could of course be wrong. Apple hasn’t yet documented what is in the latest beta update.