How to do web development on an iPad?

Question

iPad

I have a second generation iPad Air.

You need to do two types of work on it:

1) analogue: teamviewer + Skype
, that is, you need remote access to the student’s computer and the ability to communicate with him by voice

2) analogue of working in sublime text
with saving files to an iPad or an external flash drive

3) you need to make a mobile Wi-Fi for an iPad that works from an outlet
, that is, a SIM card that has Internet + modem + Wi-Fi router

The main question is is there one mobile application that has both functions - remote desktop access and voice communication