I am just looking forward to buy a new cell phone and I was going through various sites like eBay, Amazon etc, and I came across these unlocked cell phones. So I just wanted to know about these unlocked cell phones. I think that from one of the china mobile products. It would be very helpful if you let me know what the unlocked cell phone is and should I buy one of these or else go for the regular one. And also I would like to know what is the difference between the unlocked one and the regular one and which one is the good for me, because the features that I am looking in a cell phone are that it should have a big screen, better connectivity options and also a good sound quality.