No response (even though they aim to reply within 24 hours) to my query last week about iPhone tethering charges. I thought I'd give benefit of the doubt and try again. Will report back in a few days...

Hi. I submitted a question last week but the Internet appears to have eaten the response so I thought that I would try again.

Can you please explain why the cost of using the new Personal Hotspot tethering option for 500Mb costs 50% more than an equivalent 500Mb of additional mobile data?

This appears to discriminate against iPhone users for several reasons:

1) Android mobile hotspot is not subject to this restriction.

2) Tethered data volume is the same as mobile data volume.

Thanks in anticipation of a rapid response.