I've noticed some strange behaviour with the signal strength on my phone. Before purchasing, I checked the carriers website which told me I would get strong signal strength both at home, and in my office. However, my experience has been to have very intermittent signal strength, and often none at all. Last night I watched my phone, untouched on a flat surface, go from full signal with HSDPA, slowly down to no signal at all, then back up. I've heard that there may be some problems with the devices radio, can this be updated?