(Subscriber Identity Module lock) A function in GSM cellphones that restricts the phone's use to a particular cellular carrier identified by a SIM card. SIM locks are used to ensure subscribers finish ...

After you purchase and use your cellphone for an extended period of time, you can change networks. However, the phone that you're currently using may not be offered on that network. If you wish to ...

Aadhaar Lock/Unlock: Nowadays, Aadhaar cards are used for almost every important purpose. They are required for banking, SIM cards, government schemes, and many online services. Therefore, Aadhaar ...