I am a T-Mobile customer. I am relatively happy with the service, but the coverage is garbage. I thought I would try something else, and Freedompop offered me a SIM for $0.99, and then another sim for $0.01. Then they informed me that my trial began as soon as they shipped the SIM cards. Before I've even had a chance to do any testing, they sent me a reminder that I had only 3 days left of my free trial before they would start charging me money.