LG Voyager VX-10000

I had my first Voyager and everything was great for two weeks and bam, my browser broke and each time I tried to access it the phone reset (from the touch screen and the inside screen). So my local store ordered me a new phone, I recieved it this past Wednesday. All was good until 3 days later. I went to check my e-mail and what you know, my browser broke again and the phone kept reseting. So needless to say I have my third Voyager on order. I spoke with my local store manager who owns the Voyager and is having the same problem with his phone. He said I needed the new software update Version #5, my phone already had the update, so I have no clue if my next Voyager will break like the last two. Help Me!!!!