I bought my Bionic sometime in late September through my corporation. First few days I noticed that there were random restarts on the phone. I wasn't sure why, so I decided to hit up the forums and see if anyone else was having an issue. I found a few people stating something simlar to mine and some have returned their phone or exchanged, and some waited it out to see if an update would fix it. I figured I should wait and see.
After about a week owning the phone, the restarts stopped. So I thought, it must have been some weird glitch. Didn't think much of it. Keep in mind, I kept the phone unrooted and on stock. About a month into owning the phone, the restarts starting happening again. But this time more frequently. Almost once an hour to the point it kept restarting after a reboot. So I restored the phone and it worked for a short period. Then my phone would restart at the most random moments of typing. When I type a text message or an email on the phone, the keyboard locks up, then goes into the Dual Core screen and reboot.
At this point, I called Verizon. They informed me that an update is coming on its way... Then they asked if I have the standard dock and/or the Car dock navigation. I said yes to both. They stated that this was a known issue and that the OTA update would fix it. So I was furious with the response since this is a business phone. But they weren't willing to send a replacement for me. For shame Big Red!!!! But you do redeem yourselves later on in the story.
I then read that there was a leaked 5.7 update. So I thought to myself, "ok, let's give it a try." I downloaded the update and installed it and it seemed to work fine..... for about a week. After that, it started restarting again. So if Verizon wasn't willing to give me a new phone, might as well root it and find out if I can freeze some apps and see if that is what is causing the issue. That worked for about a couple of days, then the restarts once again.
About 7 days ago, I restored my phone to factory, removed root, etc. I showed the VZ rep at the Verizon store. He asked me the standard questions... Is the phone rooted? etc. I answered that it was stock. He then tested the phone out and luckily for me, it restarted for him! Thankfully, he issued out a replacement order for me. I received the phone about 2 days ago, and so far so good. I have a few app crashes here and there, but who doesn't really.
Lesson learned. Don't bother with Verizon over the phone. They do everything via a procedure method. Take it to an actual Verizon Store, not a reseller store. Let them perform tests and have them issue out your phone. There's something about a comfort level you get when you go into the store vs. having to try to process something over the phone that just makes things infinitely easier on your life. So thank you VZ!!!!