4. Now, establish a WiFi connection to the Huawei E5331 router with your PC / IPAD / iPhone / Android device. 5. Connect the Huawei E5331 router with the PC and browse for 192.168.1.1, and log in to the device’s dashboard. Go to Advanced Settings – SIM Settings – Unlock Device – Enter Unlock Code – Click on Apply. or, The IMEI (International Mobile Equipment Identity) number is a 15 digit serial number unique to each and every GSM phone. A GSM phone has a SIM Card and is usually AT&T or T-Mobile. You will usually find it printed on a sticker on the back of your cell phone or on the SIM tray of most Apple iPhones.
Type Allocation Codes (TAC) are used to create International Mobile Equipment Identity numbers (IMEIs) for wireless devices. The IMEI is a unique 15 digit number and plays an important role in ensuring proper device operation on the network. The IMEI is defined and required by the GSM standards and is in daily use in networks globally.