I can send and receive text messages and use data but cannot make calls

If you using a Xiaomi handset and the issue persists after following the steps below, please refer to this guide for additional troubleshooting information. If you are using a ‘Japan Unlimited v1’ SIM that was purchased before Oct 12th 2021, please visit the following link: v1 Troubleshooting Guide  If you are using a ‘Japan Voice […]

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