Sony Ericsson

Open Menu -> Settings -> Connectivity -> Internet Settings -> Internet profiles -> New profile.
Press Add.
Open Name and type lycamobile.
Open Connect using -> New Account -> GPRS data.
Fill your parameters as shown below.
Name : Lycamobile
A PN: data.lycamobile.tn
Username: lmtn
Password: plus
Press Save.
Highlight Lycamobile and press Select and press Save.
Highlight Lycamobile and press More, then open Settings.
Fill your parameters as shown below.
Connect using: Lycamobile
Proxy: disable.
Press Save.
Highlight Lycamobile and press More, then open Advanced -> Change homepage.
Select Name and type lycamobile, press OK.
Select Address and type http://www.lycamobile.tn, press OK.
Press Save.
Return to Internet profiles.
Highlight Lycamobile and press Select.
To start WAP session return to Menu and open Internet services.
Press to and select Lycamobile.
To finish WAP session press More -> Exit WAP.
Finish.