Comparison between AT&T and Verizon.
3. Demonstratably clearer voice quality, even when an AT&T phone is used on other side. This is amazing, too. The voice quality is just much better with EVERY call. Not a single call has sounded worse (I asked lots of my friends to call back on my Verizon number). This is so drastic a difference that I've now switched my voice to Verizon...