Motorola V600 Phone (T-Mobile)
Use and get mad phone.
I don't know how many times this phone gave me an urge to smack the handset. External LCD character gets scramble more than twice out of 5 times, which really made me feel bad.  But the worst part is that this phone sometimes doesn't even perform its fundamental job which is just making and receiving calls. I believe the problem is ver poor signal reception compared to other brand cell phone(my service was T-mobile).  Battery performance is pretty weak as well.    I'm not sure this was the only problem of mine or not but, another problem was the regular speaker(not for the speaker phone)for the ear contact becomes dummy 7 out of 10 times, which eventually led me to throw the phone down at the ground so harshly.    I mean, this phone has lots of funcionalities, especially bluetooth technology is pretty decent over all. But they first need to make the phone which has robust fundamental base(stable making and receiving calls) and then should add lots of features.  I was regretting so many times while I was using this phone and I got back to Samsung again thinking that I would never go back to Motorola in the future.