This captioned video teaches user how to use a freely used cloud software "Wi-Fi Doctor", which is proudly developed by Yfisoft Limited. , E$ c% M ], M# f; ?' Y3 ]7 m# g8 R4 t E# P) Q$ k, y9 z0 h
User manual on Youtube:& W3 v- B# w$ h* m( o https://www.youtube.com/watch?v=k5VKiexTyGc 2 Y- Y# X; x9 \ " P, f1 {0 [7 W$ @. s6 kFor enquiries, you may contact Yfisoft Limited at (852) 3524 7258 or email info@yfisoft.com.