A666G-Single card marketing telephone, is a single card phone sales all-in-one machine. This model uses GSM network standard and the cards which are belong to the following: can be used in ordinary GSM mobile phone, China Mobile, China Unicom 2G, 3G, 4G mobile phone card are all acceptable for this machine. Mainly applicable to whom needs to transfer to the phone on the mobile phone to communicate with the customer. Mainly applicable to whom needs to communicate with the customer through the mobile phone. If you occasionally need to transfer to the phone to communicate with the customer, a single card series need to open a three-way call for this and it is recommended to choose a dual card marketing phone series A888C or A888G models.
