I'm currently working for a cellular company and see many phones on a daily basis with different problems. On the 8100, the only problems that I've seen with this phone is when it first came out. It didn't have the proper software for mp3 use. There was a lot of time spent upgrading phones that were in our inventory, which takes quite a bit of time. Very time consuming, but helped with the functions of the phone. Since then, this phone, in my opinion is with the money with all the features that the phone offers. I like the phone and I'm eager to see what is around the corner for phones as technology evolves daily.