Well for the first 10 minutes anyway then VM become 1p.cheaper for the 11th minute onward.
Asda= 0p connection then 8p per minute
VM= 11p connection and then 7p per minute

0845 is also cheaper with Asda @ 8P per minute and no connection fee
Couldn't find 0844 charges for Asda anyone?

Dave wrote on Apr 24^th, 2010 at 7:52pm:

A weekend call to a T-Mobile, O2 or Vodafone mobile?

Although how anyone knows which is which anymore is beyond me (which is why I use 18185 for such calls and always pay the same 5p connection and 6p/minute).

In anticipation of the "they charge 7p/minute at weekends" reply, I didn't say I always dial the 18185 prefix, I said I use 18185.