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About Nokia S60V3 mobile phone breaking the contract ~
Certificates are used to sign mobile phone software. For example, X-plore needs to be signed when it is installed, otherwise it cannot be installed. After downloading the certificate, you can put it on your computer. When signing, click on the software to be signed, right click and sign. After the phone is cracked, you don't need to sign a certificate. Software that originally needs to be signed can be installed directly.