I'm looking for a way to block all incoming calls and texts on my phone. I'm using it as a lap timer for my track car, and it's annoying as hell when an incoming call disrupts it while I'm on track. Ideally I'd like to shut down the phone service altogether, while leaving the Bluetooth and GPS on. I don't want any notifications, I don't care if it goes to VM or hangs up, as long as I have no indication that a call came in, and I can easily block ALL incoming calls and texts. This phone is not rooted but all my others were, and I'm not opposed to rooting it to get the features I need. Any advice on an app? I tried a few I searched on here, but they were all older apps and none worked properly, maybe because of ICS, I don't know.