old subject, but you may still need 3G unit.
we could offer the suitable unit you are looking for 3G - AT07 3G unit. OEM/ODM accept and firmware customized.
Relay | Door Sensor | Fuel Sensor | Camera | Temperature sensor | Microphone | Speaker | Buzzer | Ibutton Reader and Ibutton tags | RFID reader and RFID tags | Garmin PND
write to me if any interesting: firstname.lastname@example.org
. whats APP: +86-13798358543