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Tags: Phones modems and tablets
Avoid losing your numbers
If you're storing contacts on your SIM, remember to back them up before switching SIMs so that they'll be accessible on your new phone. Once the swap is complete, you won't be able to access your old SIM.
Note: If you've damaged your old SIM or already had a SIM swap done, you might not be able to access the contact entries on your old SIM.