1, Apple's mobile phone is activated by Unicom card, but it still shows that the operator is China Mobile, and it is a mobile phone with a card sticker or a card sticker, so the operator has not changed.

2. For unlocked or unlocked mobile phones: after activation, the operator will display the operator+version number of the mobile phone card, and the version number will increase with the system upgrade or operator configuration upgrade. At present, the highest version is 20.0(ios8.4 version 8.4, as of 20 15.8.7), and the common versions are 19.0 and 19.5. If the phone is unlocked, the operator will display "China Mobile"+version number (

3. Mobile phone lock or stuck or stuck mobile phone: After card replacement is activated, the operator will not change it, such as whether the mobile card was inserted by China Mobile and whether the Unicom card was replaced by China Mobile. In this case, it can be judged that the mobile phone is locked and not unlocked.