[Q] Not registered on network error on Samsung Galaxy S4 4.4.2 - Android Q&A, Help & Troubleshooting

Hi all,
I have got a brand new Samsung Galaxy S4 from US (ordered from ebay). The device is running OS 4.4.2. My problem is after installing a SIM (local vietnam SIM) I'm not able to make a call nor send a SMS, it shows "Not registered on network". I have attached few screenshots about my device details and the problem. I have also googled for many instructions but none of them worked out. I really appreciate any help from any one!
Thanks so much
Huy

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