It’s free advice and FREE software … (I can vouch for it’s benefits)

The benefit:

Remote access and control of another computer (great from home and office)

I just updated my current version and noticed they now offer an app for IPHONE (FREE).  I have installed the Iphone app and confirm the amazing ....
from iphone I have remote access FULL CONTROL of my home and/or office computer. 

You can access any computer connected to the net provided it has the free software and you have the password.

Bonus

on the computer version

·    you can transfer files from 1 computer to another

·    has option for video cam and talk so it’s perfect for remote training  (in other words if they you you don't "get it" use the software to jointly view the screen and enjoy a seamless  explanation)

I have detailed some basic info on this page www.web.austhai.biz/remote-access, when you visit the software provide site you will see IPHONE app option

 
The set-up process takes about 20 mins otherwise get your IT people onto it.

Ps: Iphone has an app for SKYPE so you can talk via WIFI world wide for free!  (I assume you know about skype - google it)

I have found some info about another voip (internet phone) service that allows free transfers of international calls (phone to phone not computer to computer). 
I will add an article about it soon

appreciate feedbacdk to share the knowledge