Despite the fact that iPhone devices are sold in a locked mode consumers can now surpass the blocks and be able to unlock their devices to be able to use them with their preferred mobile service providers to evade the stress of entering into long contracts that are otherwise expensive and do not deliver quality services to their consumers, this to answer many questions of can you unlock iPhone 4 for tmobile, by many new iPhone users who are found stranded with a particular service provider that do not offer services that suit them, this steps are simple for anyone to follow and do not need one to have any prior intelligence in technology.
First one needs to connect the computer and open up Blackrain and click on the make it rain button to initiate the unlocking process and the device will reboot when the process is done. Enter the setting application on the iPhone to get to general tab, tap on it then network and get to cellular data network. Tap APN and enter epc.tmobile.com in the text field and leave the rest to be filled by the service provider then save the settings and turn off your device. Eject the SIM card tray and place your t-mobile SIM card into the SIM tray and return it in the device, by turning the device back on one will be able to use their t-mobile services. Before use SIM card from T-Mobile should be activated using a data plan to be assigned a unique number before use.