Sim lock how does it work

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Mount an ISO image in Windows. Boot Into Safe Mode. Disable Startup Programs in Windows. Where to Download Windows Legally. Find Your Lost Product Keys. The Best Tech Newsletter Anywhere Join , subscribers and get a daily digest of news, geek trivia, and our feature articles. This locking function is connected to the Subscriber Identity Module SIM provided with the phone and ensures that the phone can only be used in a way the service provider wishes.

A SIM lock can be unlocked by the company that provides the phone service or by using a number of different third-party applications. Unless unlocked, a card that is locked will typically work only with the network provided by a particular company or in a certain region. This is done to encourage customers of a mobile service provider to remain loyal to that provider in the long run.

Phones that have a SIM lock may also be less expensive than unlocked phones, since they typically ensure that the customer purchasing the phone only uses the network provided by the selling company. The SIM lock on a phone is typically associated with the SIM card provided with the phone, meaning a customer using a particular mobile provider will be locked on any phone he or she uses with that card. Most countries have their own SIM cards and you can purchase a SIM and a phone plan in a different country while visiting.

In this case, you must unlock the phone and actually remove and replace the old SIM card with the new SIM card to gain compatibility on the country network. If you unlock your phone, you can replace the SIM with a TELCEL card while visiting and enjoy a data plan with local and even international calling at a much reduced rate. Using this system is common for long term travel where alternating service plans according to location is useful. Nicholas Smith has written political articles for SmithonPolitics.

He is a former commissioner with the city of Berkeley, Calif. John's University School of Law. By Nicholas Smith Updated January 22, MMS Problems on an Android. Related Articles.