User's Guide

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T-Mobile 5G Gateway User Guide
3. 
4. The SIM card socket supports push-in and push-out installation
5. With the SIM door open, press the pre-installed SIM card into the slot and the SIM card pops
out
6. Carefully remove the pre-installed SIM card
7. Insert and press the new SIM card into the slot
8. Be sure the SIM card clicks into place to ensure that it is properly installed
9. Close the cover of the SIM card slot and ensure the cover is securely closed on the SIM door