Why is 5G not working?

Check with your carrier to make sure you have the correct data plan . Also, make sure you are using the SIM card that came with your phone or a 5G compatible SIM provided by your carrier. Older SIM cards may not be compatible with 5G plans. You can check Network mode to make sure that your phone has 5G enabled.

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Will iPhone automatically switch to 5G?

These include higher-quality FaceTime, high-definition content on Apple TV, Apple Music songs and videos, iOS updates over cellular, and automatic iCloud backups. With this setting, your iPhone can automatically use 5G instead of Wi-Fi when Wi-Fi connectivity is slow or insecure on a network you visit occasionally .17 Mar 2022

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