Các bạn chỉnh file host - copy dải ip này vào:
31.13.79.7
www.facebook.com
31.13.79.7 facebook.com
31.13.79.7
www.login.facebook.com
31.13.79.7 login.facebook.com
31.13.79.7 apps.facebook.com
31.13.79.7 upload.facebook.com
31.13.79.7 graph.facebook.com
31.13.79.7 register.facebook.com
31.13.79.7 vi-vn.connect.facebook.com
31.13.79.7 vi-vn.facebook.com
31.13.79.7 static.ak.connect.facebook.com
31.13.79.7 developers.facebook.com
31.13.79.7 error.facebook.com
31.13.79.7 channel.facebook.com
31.13.79.7 upload.facebook.com
31.13.79.7 register.facebook.com
31.13.79.7 bigzipfiles.facebook.com
31.13.79.7 pixel.facebook.com
31.13.79.7 upload.facebook.com
31.13.79.7 register.facebook.com
31.13.79.7 bigzipfiles.facebook.com
31.13.79.7 pixel.facebook.com
Mình test mạng vnpt chạy vù vù, up được ảnh luôn. Riêng các mạng khác thì mình chưa test