Apple iPhone 4 16GB
Network Unlock Procedure
To unlock your Apple device, ensure to remove your 3 SIM card and then connect your device to a computer running iTunes. Once connected, you need to update iOS software version of your device to 7.0 and above. After which you will receive an option to update your network settings. Upon acceptance of the network settings, your Apple device will be unlocked from the network.
If you do not receive a network settings update, this implies the device is unlocked. To verify this, insert another network SIM card into the Apple device.
If you are using an Apple device that has iOS7 or the above version, then the device can be unlocked by completing a restore of the device. If you are using a flex policy handset.
If you have any issues with the unlock process, please click here