The serial number can be found on the back of your MicroSim Device. SERIAL NUMBER ON BACK Related to clip MicroSim Coming Off Installing on Swing Stick Removing MicroSim Serial Number Location Can't finde no serial number cradle Related articles VIDEO: Initial Registration and E6 Setup Replacing a broken Clip/Cradle on the Swing Stick Accuracy & Side Spin Avoiding the Rough: Troubleshooting Your Device's Battery Drain