A:Because you didn't set up the specific SOS number and open the caller display of you SIM card.
A: Firstly, to use your phone call the number of SIM card to make sure the device is power on and the SIM card is well-inserted and with enough balance. Second, to check the GPRS and network. Third, to check device parameter make sure the settings are right. Fourth, to check device status.
A:Maybe there are 3 reasons i.e. device power-off, weak or none signal, SIM card debts or GPRS service overdue.
A:We will arrange the production after receiving your deposit, usually 30%.
A:After we get contact details, and confirm the samples, you can send us the PO and confirm the order, we will do and send PI for you to confirm.
A:Whatever product you interested, welcome send your information directly to my email, or chat with us online.
