Experience in Oman

[ygeffens]

Who has some experience in Oman with UM(+), Yackie or other cards?

I have these 3 cards, so I prefer these (but other suggestions are welcome).
If it was myself who was traveling over there, I would take these 3 cards with me, but since it's someone else, with absolutly no technical knowledge, must put the right card in the phone and explain step by step what to do.

I want to give him a phone where dialing from the keypad is possible, or through the menu. Dialing *...#...# or whatever is to complicated (he simply will not understand why that is needed ).

So,... What card will work flawlessly ?
Is there a preferred provider to connect to, or can I leave the phone in 'automatic network detection' (explaining how to choose a network to him will be difficult too).

Thanks,
Yves