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UDID is an acronym for Unique Device Identifier. The UDID is a feature of Apple's devices running iOS, tvOS, watchOS, and macOS.It is a unique identifier that is calculated from different hardware values, such as the ECID.
The manufacturer for each new device model gets at least one TAC (Type Allocation Code) allocated by GSMA, consisting of 8 digits, to which he can add a 6-digit serial number to obtain the IMEI. Thus, with one TAC, a manufacturer can release up to 1 million devices with a unique IMEI.
The IMEI (15 decimal digits: 14 digits plus a check digit) or IMEISV (16 decimal digits: 14 digits plus two software version digits) includes information on the origin, model, and serial number of the device. The structure of the IMEI/SV is specified in 3GPP TS 23.003.
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 network.
As ESNs have essentially run out, a new serial number format, MEID, was created by 3GPP2 and was first implemented by Verizon in 2006. MEIDs are 56 bits long, the same length as the IMEI and, in fact, MEID was created to be a superset of IMEI.
The Marketing Part Number (MPN) is code that Apple Inc. uses to classify all of its items in a unique way. An MPN can be used to identify a particular configuration of Apple hardware. [ 1 ] MPNs are additionally referred to by Apple as order numbers, and part numbers, and model numbers, but are distinct from Apple's "A number" format of model ...
Apple M1 Extreme (unreleased) — Jade 4C-Die [76] [77] Apple M2 – Staten [78] Apple M2 cores – Blizzard efficiency cores and Avalanche performance cores; Apple M2 Pro – Rhodes Chop; Apple M2 Max – Rhodes 1C; Apple M2 Ultra – Rhodes 2C; Apple M2 Extreme (unreleased) – Rhodes 4C [79] Apple M3 – Ibiza [80] [81] Apple M3 Pro – Lobos
A typical SIM card (mini-SIM with micro-SIM cutout) A SIM card or SIM (Subscriber Identity Module) 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 devices (such as mobile phones and laptops).