What to do if the device is locked by the network or operator and cannot use eSIM/physical SIM card?
- Contact the original device operator to apply for network unlock (some operators require meeting the contract period).
- Confirm the network bands supported by the device are consistent with the destination operator to avoid band incompatibility.
- If unlocking is not possible, switch to an unlocked device.
- Purchase a global package that supports multiple bands to improve compatibility.