I took a few ours the last Saturday my Q1 to Fort Lauderdale Beaches and... You better read about what I found there in this little article at Ultranauts.com
Please, do not tell me that Sprint, Verizon or any other Cell Phone company is better. They all work the same. They even share the same towers and the same network (some of them). I have checked with my friends using other companies and in South Florida Beaches the signal is poor no matter what company are you using.