No just turn it on. You should get a text saying welcome to tunisia. After that just use your phone.

Top tip though. Make sure your 3g data is turned off to avoid a fat bill when you get home.

 

Just to expand on the disabling of 3g, I would recommend calling 3 and tell them to put a GPRS block on the phone that way should data be re-enabled (if you do it yourself on the phone) you still won't be charged since access will be denied.

 

I wouldn't rely on carrier-side block, though - it's against their interests to block it for you.

 

Be aware that both calling and answering calls, as well as both sending and receiving texts will be expensive and won't come out of your current plan allowance!

 

Hi,

I'm off to France soon and am also on 3. I'm not sure of how this compares to outside Europe, but 3 have a blanket setting on accounts where data when used abroad and outside the free account allowance is blocked after you spend