I am one of the best persons to say that is DEFINITELY possible. Gerio knows how a person can take offense to that suggestion, because I did when he suggested it me.
And to those who have gone through 2, 3, or 4 phones (3 in my situation) it may SEEM that it's not "something you are doing". And, the implication ISN'T that you ARE, or that you are doing something intentionally.
But, it is something that is common among all the phones.
In my situation, which I have yet to see repeated in any forum, the cause of three different X's constantly rebooting was my home router.
I used a router at work and wherever available and never had any issues, but for some reason, never noticed that it only rebooted at home (call it tunnel vision).
On a fluke, I used my 2nd replacement phone without wifi at home and finally determined that was the issue.
Even then, Verizon and Moto CSRs refused to believe that a router could do that, but in the same breath the Moto CSR told me to buy a different router.
Lesson being, you never know. For others with multiple phone issues:
Apps? Yes, that's possible. Were they diligent about installing fresh apps from the market on each replacement phone? Not apps saved on the SD, which is transferred from one phone to the next.
If they say they didn't install any apps, did they HONESTLY not install ANY apps, launchers, etc. and did they format the SD card before activating the replacement phones?
The SD card itself. There have been issues with SD cards. Why Verizon doesn't use a new SD card as a method of troubleshooting, instead of having the user transfer the same card from one phone to another, is beyond me. (I asked and was told I would have to buy a new one because they wouldn't).
The battery. Also transfered from old phone to replacement phone. Before anyone asks, "what could go wrong with a battery?", explain to me how it made sense that my router could make my phone reboot? Electronic devices are unpredictable.
I would even go so far as to suggest they create a new Google account, so contacts aren't automatically reloaded into the replacement phone (the same for email folders). Yes, that's really paranoid, but it was on my list of ideas before I figured out my problem.
I agree though, mortb, speaking from experiencing it first-hand. When issues continue to cross over from one phone to the next, everything is pointing to something else, besides the phones.
Those experiencing it will be FURIOUS to hear it. I was. But, calm down and think. There is an answer and it isn't "bad luck".
...