How to operate a mobile phone with an accessory card?

Subnumber service —— Subnumber dialing method: After the service is started, dial "95096+ Subnumber Serial Number+Counterparty Number" or "9509699", and make a call through the Subnumber according to the voice prompts. Reminder: When roaming internationally, Hong Kong, Macao and Taiwan, the secondary number cannot be used as the main call.

Minor number service-the way to send SMS with real minor number: edit SMS "minor number serial number +F (or f)+ SMS content" and send it to "opposite number"; Or you can edit the "short message content" and send it to "10658230+ serial number of extension+other party's number". Tips: The sub-number can only send short messages to customers in China (excluding Hong Kong, Macao and Taiwan), and the receiver cannot be a number starting with 10086, 1065 or 1066.

Answer the phone: When other customers dial the secondary number directly, the incoming call of the secondary number is displayed as "9+ serial number of the secondary number+calling number".

Mobile phone cards generally refer to SIM cards.

SIM card is (subscriber identity module), also known as subscriber identity card and smart card. GSM digital mobile phone can only use this card.

The computer chip stores the customer information of digital mobile phone, encryption key and user phone book, which can be used to identify the identity of GSM network customers and encrypt the voice information when customers talk.

References:

Baidu encyclopedia mobile phone card