Review on Advanced Model TK103A: GPS Car Tracker with GPRS and Vehicle Theft Protection System by Rick Ross

2G isn't at the top of most cell service providers' list, ATT has completely ruled it out. My T-Mobile 2G signal is 0 to 2 bars on my phone. For the best connection, use the Pulse Larsen SB698SMA3 small patch antenna. For example, a call forwarding function to check the balance of a SIM card. One improvement is to limit the number of door alarms to a set value. Now it fires every 3 minutes. Also, the guide may be more detailed in separate sections. My green GPS light blinks and sometimes stays on. I would like to know what the difference is. Again a very good product. I wish they released a 4G version so I can use ATT which has the best coverage in my area.