How to restore 4g to e?
If the 4G mobile phone becomes e and the 4G network cannot be used, we suggest you:
1. Whether to use a mobile phone card for 4G business, it is recommended that you contact the network operator to activate the 4G service.
2. Check whether the 4G network mode is enabled: Settings-Connections-More Networks-Mobile Network-Network Mode-Select 4G/3G/2G (LTE/WCDMA/GSM) network mode (some mobile phones/tablets The computer does not support changing the network band).
3. Confirm that the location is covered by 4G network.
4. Try shutting down and restarting.
5. Back up data (contacts, text messages, pictures, etc.) and restore factory settings.
If the problem persists, it is recommended that you bring your purchase invoice, repair card and machine to the local Samsung after-sales service center, and professional engineers will help you detect it.
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