SIM lock

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SIM lock

(Subscriber Identity Module lock) A function in GSM cellphones that restricts the phone's use to a particular cellular carrier (a particular SIM card). SIM locks are used to ensure subscribers finish their service contracts when the phones are heavily subsidized by the carrier. SIM locked phones may be unlocked by entering a code.

Apple's iPhone brought the SIM lock into public view because of its exclusivity with AT&T in the U.S. However, iPhones have been readily "unlocked" by hackers both in and outside the U.S., not only to use a different carrier, but to customize their appearance and download applications even before Apple debuted its App Store. In addition, Apple sells the iPhone without the SIM lock in Australia, Taiwan, Hong Kong and other regions, where locked phones are either prohibited or are a recipe for marketing failure. See SIM card, jailbreak and iPhone.

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No references found			However, this capability is blocked by its manufacturer by putting a Sim Lock to every unit. Safe IPhone Hack for IPhone Maximization by Jose Perez / Computers and Internet community Another device, the HTC P3600 is also SIM lock free, and this, combined with its compact design, makes it suitable for people who travel lots--users can insert the SIM card of most domestic carriers. The rise of the Smartphone by Greenberg, Joseph / Japan Inc.			silvery iron Silvester Silvestr Silvestr Feodosievich Shchedrin Silvestr Gogotskii Silvestr Iasevich Todriia Silvestr Kosov Silvestr Shchedrin Silvestr Silvestrovich Gogotskii Silvestr Todriia Silvestras Baltramaitis Silvestre de Sacy Silvestri, Filippo Silvestro Lega Silvics silviculture Silvin, Mikhail Silvin, Mikhail Aleksandrovich Silvio O. Conte National Fish & Wildlife Refuge Silvio Pellico Silvretta Silybum silylene Sim SIM card SIM lock Sim Sa-Jong sima Sima Matavulj Sima Sarajlija Milutinovic Simadan Festival SIMAN Simancas Simanovskii, Nikolai Simanovskii, Nikolai Petrovich Simazin Simbirsk Simbirtsev, Vasilii Simbirtsev, Vasilii Nikolaevich Simbra Oilor SimCity SimCity 2000 Simcoe Simcoe, John Graves Simcoe, Lake SIMD Simeiz Simenon Simenon, Georges Simeon Simeon Bar Giora			Silyl Silylene Silylenes Silymarin Sim Sim Sim Sim Sim (disambiguation) Sim (disambiguation) SIM Access Profile SIM Application Tool Kit SIM Application Toolkit Sim Association for Stock Car Auto Racers SIM card SIM card SIM cardholder SIM cards SIM cards SIM chip Sim City Sim City 2 Sim City 2 Sim City 2000 Sim City 2000 Sim City 2K Sim City 3 Sim City 3000 Sim City 4 Sim City Societies SIM lock SIM Over the Air Programming Sim Redmond Band Sim Sa-Jong Sim Safe Driver Training Sim Sickness Sim Touring Car Cup SIM-AR SIM-STIM Interface SIM/STIM SIM_EDI Management Center SIM2 sima sima sima Sima (disambiguation) Sima (disambiguation) Sima Guang Sima Matavulj Sima Qian Sima Qian Sima Sarajlija Milutinovic Sima Sedmitza Sima Xiangru SIMAAC Simaba cedron SIMAC SIMAD Simadan Festival

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