Importing and Exporting Contacts
Importing contacts from a storage device
1. Open 
Contacts.
2. Touch 
> Import/Export > Import from storage.
3. Select one or more .vcf files, and then touch OK.
Exporting contacts to a storage device
1. Open Contacts.
2. Touch > Import/Export > Export to storage > Export.
3. Choose where you want to export the contacts from and touch OK.
By default, the exported .vcf file is saved to the root directory of your device’s internal storage. Open Files to view the exported file.
Importing contacts from a SIM card
1. Open Contacts.
2. Touch > Import/Export > Import from SIM. If your device has dual SIM support, touch > Import/Export and choose the SIM card you want to import your contacts from.
3. Select the contacts you want to import and touch 
.
4. Choose the location. The device will automatically import the contacts.
Exporting contacts to a SIM card
1. Open Contacts.
2. Touch > Import/Export > Export to SIM. If your device has dual SIM support, touch > Import/Export, and choose the SIM card you want to export your contacts to.
3. Select the contacts you want to export and touch 
.
4. Touch Continue.
Questions about your Huawei Mate 10? Post in the comments!
Huawei Mate 10 Manual [PDF]