Overview

Tunisia you can buy a prepaid GSM card called "Carta +" by Tunisian Operator Tunisiana in one of many mobile phone stores with the "Tunisiana" sign for about 5€. (I buyed on at Monastier Airport for 5 Dinar ~ 2,5 Euro)
Their network ist 2g only (as of spring 08) but they have good edge coverage, especially in the areas frequented by tourist.
To activate the card you have to make a (free) inital call to 1222.
Then you also have to ensurethat the internet mobile service is activated on your sim card (on mine it wasn't by default), either by asking directly in the store when you buy the card, or (if they don't know what you are talking about, which was the case for me :) ) by calling the free Hotline 1111. There will be someone who speaks some english if you ask.
The Shop in Monastier Airport activated the Card and Internet and MMS Services via Online Software.

To check your balance enter *100# (send).

Connection Settings

• APN: internet.tunisiana.com
• User: internet
• Pass: internet

• Proxy:10.3.2.99 (if needed)
• Port: 80 (if needed)

Pricing(see here)

There are 4 different pricing options for prepaid customers:
The standard price ist 0,004TND/kb (= about 2€/MB)

Additionally there are 3 Data Packages ("Forfaits") you can chose from:

• 2 MB data traffic for 4 TND

• 10 MB data traffic for 9 TND

• "unlimited" (3GB cap) data traffic for 39 TND (which is about €21)

(The 19 TND weekend and evenig flat is not available for prepaid customers)

The traffic is valid for 30 days and you can also buy a packages only once every 30 days!

To activate a data package you have to enter *124*"price of the package"# and then press send.
For example to buy the 10MB for 9 TND package you have to enter *124*9# (send).

You can check your remaining traffic by entering*100*4# (send).

To check your balance enter *100# (send).

Attention: In Tunesia the Internet is censored. For Example there is no Youtube available. Also the provider Tunisiana blockes all SMTP mail! POP3 and IMAP is working for receiving Email. Webmail and Microsoft Exchange Protocol works (for sending and receivung).
Also my experience showed that the EDGE-Connections are stable for a data transfer - but not "stand by connections". I used the SIM in my iphone and i lost several times a day the online connections - then a offline/online switch were needet (Flight mode on/off). Also the speed was most time at GPRS level - while the connection was EDGE (i stayed in Iberostar Sahara Beach in Skanes) - anyway it was much faster EDGE-Connection at Monastier Airport.