This captioned video teaches user how to use a freely used cloud software "Wi-Fi Doctor", which is proudly developed by Yfisoft Limited.4 v" C$ O5 c6 }7 T& h( e
w( r8 {; X* M, G/ ^1 UUser manual on Youtube: 0 `6 k& u$ K2 ~3 ?3 {: Phttps://www.youtube.com/watch?v=k5VKiexTyGc& A# r$ Q( v. Y2 f5 ]8 U
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