Search results
Results from the WOW.Com Content Network
Unstructured Supplementary Service Data ( USSD ), sometimes referred to as " quick codes " or " feature codes ", is a communications protocol used by GSM cellular telephones to communicate with the mobile network operator 's computers. USSD can be used for WAP browsing, prepaid callback service, mobile-money services, location-based content ...
The phone identifies the subscriber by transmitting the International mobile subscriber identity (IMSI) number, which is stored on a SIM card that can, in theory, be transferred to any handset. However, the network's ability to know a subscriber's current, individual device enables many network and security features. [citation needed] Dual SIM ...
If you intend to use your SIM card, make sure to put your phone on flight mode after using SIM cards from Iranian companies. Irancell, Hamrah Aval and RighTel are the main 3 phone operators in Iran. Fortunately the existing mobile network provides 4G & 5G cellular data coverage in all the small and big cities around the country.
Worldwide distribution of country calling codes. Regions are coloured by first digit. Country calling codes, country dial-in codes, international subscriber dialing (ISD) codes, or most commonly, telephone country codes are telephone number prefixes for reaching telephone subscribers in foreign countries or areas via international telecommunication networks.
A personal unblocking key ( PUK ), sometimes called personal unblocking code ( PUC ), is used in SIM cards to reset a personal identification number (PIN) that has been lost or forgotten. Most mobile phones offer the feature of PIN protection. After switching on the phone, if the PIN security function is active, the user is required to enter a ...
A typical SIM card (mini-SIM with micro-SIM cutout) T-Mobile nano-SIM card with NFC capabilities in the SIM tray of an iPhone 6s cell phone A SIM (Subscriber Identity Module) card is an integrated circuit (IC) intended to securely store an international mobile subscriber identity (IMSI) number and its related key, which are used to identify and authenticate subscribers on mobile telephone ...
They are composed of a combination of an area code and a local line or subscriber telephone number. Area codes consist of one digit ( Lagos, Ibadan and Abuja) or two digits. Local telephone numbers contain from five to seven digits, and may vary within the area code. Mobile phone numbers start with 070, 080 or 081, 090 or 091 and are followed ...
Typically the modem configurations are automatically loaded by the device firmware when inserting a sim card. The IMS Status debug can also indicate if Wi-Fi Calling (Voice over Wi-Fi) and Video Calling (ViLTE/Video Telephony) are available. (Note: For Wi-Fi Calling to say Available the device has to be connected to a suitable Wi-Fi Network).