I have an Orange phone that has been unlocked so as to use my work Vodafone
SIM. [insert usual rant about inferior sound quality and ridiculous
answerphone message notification compared to Orange!]
With Orange I had them enable a faster data service - Hi Speed Data or
something like that, and it came to me by way of a SIM update.
The work phone is through a third party service provider (another irritating
quirk I wasn't used to with Orange!) who are just plain grumpy and
uncooperative and refuse to activate the equivalent service on Vodafone.
The question is this: is it possible to manually activate it yourself by,
for instance, simply entering a certain key combination on the phone?