This captioned video teaches user how to use a freely used cloud software "Wi-Fi Doctor", which is proudly developed by Yfisoft Limited. " P- Z0 Y( n5 s ! ]* ^! l* h( e3 C' r+ j7 a1 YUser manual on Youtube: " K! }& K: Q8 w& Jhttps://www.youtube.com/watch?v=k5VKiexTyGc % h& W# \4 C _- s9 t$ A! C: ~* x% h% E) a0 `* f8 n, p
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