A more detailed description of the VIN limit can be found here.
http://www.hexcode.co.za/products/gs-911/vinlimitIn short, I have helped many owners, using my tiny "portable" laptop.
I never used a VIN for that as no service functions.
The "mobile" or "phone" software do NOT support "service" functions.
In short, unless you do not read the Hexcode links:
You can not and will never use any of the 10 VIN numbers using a moblie.
End of this, when using a PC, you are always ASKED if you want to register a new VIN before it is done.
If you never got that question and agreed, you have 10 VIN`s to "use" :-)