this is simple method to unlock j701f/ds you just need 100% working root file and i will give you all root file, there i add one video you just follow all step by step,
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Download: J701F Android 7.0 Root File
Download: J701F Android 6.0 Root File
Key: How To Unlock Latest Samsung J701F With Z3X Box.
Key: How To Root Samsung Galaxy J7 Core (j701f) Without Any Issue.