SIM508 GPRS not allow "CME error 107 : GPRS service not

[nguyenvandai]

gprs not allow service sim508

I connect gprs with sim508. but sometime i receive message "CME error 107 : GPRS service not allow".
Why?
plz help me.
thanks.

 

[GSM Man]

gprs service not allow sim508

For some reason your service provider is denying GPRS service for your connection. The 2 most commons reasons that I know of are:
- your plan does not include Data services (GPRS)
- your connection is a "roaming" connection and data services are not supported with that carrier

 

[nguyenvandai]

gprs service not allow?

Sometime i receive data from GPRS, sometime not. i think that SIM's service table is enable GPRS.
Plz help me.