After using RF-GSM company’s gps tracker, some customers said the device is offline that they don’t know how to deal with it. Here are the reasons that may make the gps tracker offline. If your device is offline, you can try to check the following reasons.

1. The local signal is weak or not stable.(severe weather such as snowing, heavy rain, lighting may affect the cell phone signal)

2. The sim card is not inserted right.

3. The sim card had already been in arrearage.

4. GPRS data plan is used up or no GPRS data plan.

5. Electric quantity of the device is used up.

6. APN haven't set right.