After adding new servers in my minecraft pocket edition, when I try to join it then for quite a while it shows "Connecting to external server" and after a long time "Disconnect from server" appears. And even when my ping turns green at that time is around 59-80, I am still unable to join. Only the pre-installed servers work in it. This is the biggest issue for us . 

Team Mojang, request you to fix this as soon as possible because we also want to play Minecraft with our friends on the server and we don't know when that will be possible.

Thankyou