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How many contacts can Unicom sim card hold?

If you use a vivo phone, go to Settings-(Applications and Permissions)-(System Application Settings)-Contacts-Copy Contacts. In the number after "copying from SIM card", you can see the maximum number of contacts stored in SIM card. The number on the left of "/"represents the number of contacts stored in the SIM card, and the number on the right represents the maximum number of contacts stored in the SIM card.