If you have a newer model or your model is not mentioned that most likely you cannot unlock it without a sim card from a different provider. We have listed some of these shortcodes under the brands below.

For some older models there are some short codes that may still work to allow you to enter in the code without a sim card.

Without an unsupported sim card it is not possible to enter in the unlock code.

For most newer phones it is absolutely required to have a sim card from a different network carrier inside in order to get the phone to prompt for an unlock code.

How to enter unlock code without sim card: Once you enter in this network unlock code into your device your device would be free from all network restrictions ( network lock) to allow your phone to accept sim cards from different network carriers.

The network unlock code is a unique code only for your specific phone that is calculated using the IMEI number. General Instructions for most phones makes and models:ġ) Start the phone with an unsupported SIM card in the phone and it will prompt you to enter the unlock code.

T mobile network unlock code