Can I use the software on my phone when I am away from the office so I can book for a customer who calls me?

Yes, you can. The booking screens are built to work in an ordinary web browser, so you can open your portal on a phone or a tablet, search, make a booking and look up an existing one, as long as you have a decent internet connection. There is nothing to install, you just log in the same way you do on your computer.

In practice the search and booking part feels fine on a small screen. The back office side, things like reports, staff logins and markup settings, uses wide tables that were laid out for a laptop, so you can still reach them from a phone but you will be scrolling a lot. Most agents end up searching and booking on the move and leaving the heavier admin work for when they are back at the desk.

To be straight with you about the limits. Whether you get a separate mobile app, rather than the mobile view of the website, depends on your plan and on what was agreed when your portal was set up, so please do not assume an app is included. Card payments taken on a phone pass through your own payment gateway's mobile screens and through the customer's bank, and how smooth that feels is in their hands, not ours. Printing is also awkward from a phone, so it is easier to email the ticket or voucher to the customer or to yourself.

The simplest thing to do next is to log in from your own phone, run a real search and take one small booking all the way through, then note which admin screens you actually need while you are out so we can look at what is possible for your setup.