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By default, each SIM card is named after the carrier. You can rename your SIM card to make it easier to identify. – This feature is only available on dual SIM phones.
– Features may vary depending on your carrier.
1. Open 
Settings.
2. Touch Dual SIM management.
3. Select a SIM card name. Enter a name and touch OK.
Questions about your Huawei Mate 10? Post in the comments!
Huawei Mate 10 Manual [PDF]
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