it is posible to develop web pages on a cell phone? what would i need to install¿?

Answer 1

you can use any note editor like es note editor, droid script, droid edit and sololearn has also one and save it with html extension and open with chrome or from other web browser

Answer 2

You could just develop on your desk top and use chrome to display what it would look like on you phone or what ever screen size you want. Safari also has this options in development tools