Method for obtaining unique identification of Android mobile phone

Get unique ID of mobile phone

Obtain the unique identification of the mobile phone by splicing

The first method is to obtain IMEI, but some mobile phones cannot be obtained if they are not genuine. Therefore, some devices do not have unique identification through this method. The second method is to obtain the serial number of mobile phone card. Of course, this is not unique, Because some mobile phones are dual card and dual standby, it may be empty. The third way is universal, that is, UUID. An identification is randomly generated, but it must be saved locally to prevent the random code from being generated again for three-layer judgment in the next entry to obtain the unique identification of the mobile phone.

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