As far as phone calls go, you absolutely can't go wrong with the SDA and its call-quality.
Introduction
T-Mobile will soon be releasing their SDA Smartphone to the public in February. Priced at $299.99 with activation, it's aimed to be a decent entry-level phone for those looking to try the Windows Mobile platform out. Unfortunately, the phone has a few flaws that make it more trouble than it's worth. A limited camera, horribly placed memory card slot and a bad UI make the SDA suffer. Join us as we take a ride through what the SDA has to offer and whether it's good enough to meet your standards of phonology.
by Paul Raimondo on November 8, 2009:
“The phone has bad reception and sound quality. I will have no signal on the SDA then take my sim card and put it in another phone to have a clear signal. I have tried this many times to find the same results. ” More...