This captioned video teaches user how to use a freely used cloud software "Wi-Fi Doctor", which is proudly developed by Yfisoft Limited. ) m9 q3 O2 w* l; ?$ n3 P2 m* j# x6 W' p" L* p
User manual on Youtube:1 s) O4 P( p+ M* L; v https://www.youtube.com/watch?v=k5VKiexTyGc 3 Q7 @9 D3 K- b1 ?5 f1 k7 v6 I2 ~ 9 J% s" b0 w, I/ _For enquiries, you may contact Yfisoft Limited at (852) 3524 7258 or email info@yfisoft.com.