As of 2014, the SIM lock on a Samsung mobile phone may be unlocked by providing its IMEI number, a unique code for a particular phone, to an online service provider. The service provider computes a numerical unlock code for your mobile device and sends it via email. Upon receipt, the number is entered on the device to unlock it.Know More
The SIM unlock code is usually emailed within a day. However, it could take up to three days in some cases. Alternatively, an individual may log in to the system and engage in a live chat with a customer support representative. Most Samsung devices across many world regions, such as in the United States, Europe, Australia, Canada, Latin America and parts of Africa may be unlocked this way. The service providers support almost all models.
However, if the phone is hard-locked, the unlock codes provided may not work. A hard-lock may be confirmed by entering a SIM card from a different mobile phone service provider. After switching it on, the phone prompts for a PIN. If the phone is hard-locked, it will display one of these messages: “SIM password,” “Network Lock,” “SIM network unlock PIN” or “Phone Freeze Contact Service Provider.”Learn more about Mobile
An iPhone 4 can be unlocked to work on another carrier. The current wireless carrier will need to provide the unlocking service.Full Answer >
Tablets are usually unlocked by either entering a password or tracing a specific pattern on the tablet's touch screen. If the user has forgotten the password or correct pattern, then additional methods may be required, such as entering the user's Google account details for Android tablets.Full Answer >
If the device was purchased from Fido, then it can be unlocked directly via Fido. In order to unlock a device, the account it was purchased on must be in good standing, and it must also meet at least one of three required criteria set by Fido.Full Answer >
Older devices, including 3G phones, may be unlocked at any store location or over the phone. For a 4G device to be unlocked, it must be delivered to one of the company's stores. In some cases, these require three to four business days to unlock as they are sent to an outside technician. With the exception of requests for multiple device unlockings, U.S. Cellular does not charge for this service, as of June 2015.Full Answer >