Alright....let me try and explain a bit more. I have had to do this a few times already this year...and the more I try and explain it...the more people tend to tell me I am talking out of my @ss!
BIS is aimed at individual users. Gives you your Vodafone SatNav, browsing on device, facebook and all the other goodies. BES does exactly the same thing that BIS can do, but with the added functionality of OTA sync with your companies exchange server, provided that your company has a BES server installed ontop of the company mail server. So, if you have BES, you will be able to do whatever a BIS client can do and more.
BUT, it is still two different VAS's with different pricing for each and different service codes on our system. When you are on BIS, and request us to activate BES for you, then the system will automatically delete BIS and load BES for activation. Otherwise you will be charged R157.00 instead of just R98.00 for BES. That would just be stupid and unfair. That my friends is why you cant have BIS and BES services active at the same time on our system. But dont be fooled...I REPEAT....BES will give you everything BIS has to offer....BUT with MORE functionality.
OC