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Why Does My Phone Say Invalid Sim Card

If you recently switched carriers or got a new phone, your old SIM card might have been deactivated. If you ordered a new SIM and kept using the old one, the old one will eventually stop working.

If you recently switched carriers or got a new phone, your old SIM card might have been deactivated. If you ordered a new SIM and kept using the old one, the old one will eventually stop working.