How to activate SAWA and Mobily Phone Roaming

So If you are looking for information on how to activate SAWA ( Jawwal ) or Mobily Phone when travelling abroad, my answer is simply nothing you just have to turn on your mobile phone after arriving the country of destination.
I have been in Dubai and what I have done is just to configure the Network manually to DU and all is fine and I could even use my mobile phone in browsing the net. But it is costly to have Mobile browsing using SAWA and Mobily Roaming.