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SIM lock. A SIM lock, simlock, network lock, carrier lock or (master) subsidy lock is a technical restriction built into GSM and CDMA [1] mobile phones by mobile phone manufacturers for use by service providers to restrict the use of these phones to specific countries and/or networks. This is in contrast to a phone (retrospectively called SIM ...
An unlocked bootloader, showing additional available options. Bootloader unlocking is the process of disabling the bootloader security that makes secure boot possible. It can make advanced customizations possible, such as installing custom firmware. On smartphones, this can be a custom Android distribution or another mobile operating system.
Samsung Gear. The Samsung Galaxy Watch series is a line of smartwatches designed and produced by Samsung Electronics. The line features various health, fitness, and fashion related features, and is integrated with Samsung's other products under the Samsung Galaxy brand. The series is the successor to the previous Samsung Gear watches.
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T-Mobile: T-Mobile US: Operational: GSM 1900 / LTE 600 / LTE 700 / LTE 850 / LTE 1900 / LTE 1700 / LTE 2500 / 5G 600 / 5G 1900 / 5G 2500 / 5G 26000 / 5G 28000 / 5G 39000: Former Cook Inlet West Wireless, Voicestream; [141] now universal USA code. Also used for Mint Mobile, [142] Ting. [81] UMTS shut down July 2022, GSM to shut down Sep 2024 ...
The first digital watch was the Pulsar, introduced by the Hamilton Watch Company in 1972. The "Pulsar" became a brand name, and would later be acquired by Seiko in 1978. In 1982, a Pulsar watch (NL C01) was released which could store 24 digits, likely making it the first watch with user-programmable memory, or the first "memorybank" watch.
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 4-8 ...
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 ...