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So, for example, the 140-octet envelope of an SMS, [3] with no other language indicator but only the standard class prefix, can transport up to (140*8)/7=160, that is 160 GSM 7-bit characters (but note that the ESC code counts for one of them, if characters in the high part of the table are used).
Yes, unlimited int'l talk and text from U.S. to >35 countries; unlimited talk, text, and data (1 GB 4G LTE, then unlimited 2G unless additional data packs purchased) while roaming in >35 countries [335] Yes [338] [339] CDMA not supported, only LTE (thus non-WiFi voice is VoLTE). Reportedly uses Sprint as primary network and only roams to AT&T ...
ETSI and 3rd Generation Partnership Project (3GPP) standards, such as GSM and LTE, define supplementary service codes that make it possible to query and set certain service parameters (e.g., call forwarding) directly from mobile devices.
Short codes, or short numbers, are short digit-sequences—significantly shorter than telephone numbers—that are used to address messages in the Multimedia Messaging System (MMS) and short message service (SMS) systems of mobile network operators. [1] In addition to messaging, they may be used in abbreviated dialing.
USSD on a Sony Ericsson mobile phone (2005). 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.
The mobile country code consists of three decimal digits and the mobile network code consists of two or three decimal digits (for example: MNC of 001 is not the same as MNC of 01). The first digit of the mobile country code identifies the geographic region as follows (the digits 1 and 8 are not used): 0: Test networks; 2: Europe
Airtel: Bharti Airtel Bangladesh Ltd. Operational: GSM 900 / GSM 1800 / UMTS 2100: Formerly Warid Telcom, later Airtel. Currently merged with Robi keeping brand name Airtel 470: 09: ollo: Bangladesh Internet Exchange Limited (BIEL) Not operational: LTE 800 / LTE 2600 / WiMAX 3500 [16] shut down 2019 [17] 470: 10: Banglalion: Banglalion ...
The Type Allocation Code (TAC) is the initial eight-digit portion of the 15-digit IMEI and 16-digit IMEISV codes used to uniquely identify wireless devices. The Type Allocation Code identifies a particular model (and often revision) of wireless telephone for use on a GSM , UMTS , LTE , 5G NR , iDEN , Iridium or other IMEI-employing wireless ...