This app has helped me incredibly. Well, what does it do? It allows you to ssh into a server and do everything you can accomplish on a regular terminal, and this is from your mobile device.
It comes with an awesome keyboard feature set such as pop up keys for ctrl, tab e.t.c As a bonus, it allows you to connect to the mobile device's localhost and violate it in so many ways.
Personally I use an android version of it. Get to know it and it could turn out to be just what you needed to provide 99.9 uptime commitment on your applications.