My brother and I both ordered Sony Ericsson Xperia X10a's in 2010. They were the Canadian versions registered to Rogers network. I was excited to own SE's first android phone. It worked fine and everything until one day about two months ago. I used to tether my 3G onto my laptop to get an internet connection. One day randomly the computer just stopped recognizing the X10. I would always get the error "USB not recognized". I figured that it was a faulty USB cable. However, my brother's phone was recognized by my cable. Then i thought maybe it was my computer. But when i connected my X10 to my brother's computer, i got the same error. So i knew it was a phone error. The phone would still charge with the AC outlet but not through the USB even though the LED light that says it's charging would stay on. I tried researching on forums on what could be the possible cause. I tried both the suggested soft reset and hard reset. I tried uninstalling and reinstalling SE Companion as well. I still received the same error. Luckily, i did have a SquareTrade warranty and I sent it to them. After a week, they say they could not fix the phone and are refunding me the cost of the phone. I am curious to see if there are any others out there that might have had a similar problem with connecting their X10 to their computer? Also, just last week my brother's X10 just stopped charging completely. He can't charge it through AC outlet or USB. He's about to send it in for repair and I'm quite sure it's gonna be a problem they won't be able to fix either. Any one else have similar problems with their X10?