I had at&t for two years and verizon for one so far. I have only had 2 dropped calls with at&t and their customer service is great. For verizon, sometimes when other verizon people call me, they can hear me talking, but I can't hear them or I can hear them talking but they can't hear me. It can be quite annoying. Also, verizon's customer service always puts me on hold for about 30 minutes and it took a long time to transfer my number from at&t to verizon.