A network locked phone, also known as a carrier locked phone, is a device that is tied to a specific mobile network provider. This means that the phone is programmed to only work with SIM cards from that particular carrier.
How can you used the mobile phone?
A Gevey Sim is a small device that allows you to unlock your iPhone without the need for a carrier unlock code. It is a thin, flexible circuit board that you insert into your iPhone's SIM card tray along with your SIM card. This clever device works by exploiting a loophole in the iPhone's software, allowing you to use your iPhone with any carrier.