Does Xiaomi start online SMS charging after brushing the machine every time?

Hello, because the account number and system will change after the mobile phone swipes the card, you need to send a short message to activate this function. If you click on the system update normally, it won't affect this, that is, it doesn't need to be activated, unless the mobile phone is refreshed or will prompt this and this after returning to the factory. The SMS fee is charged by the operator. Xiaomi Company will not charge any fees, please rest assured.

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