Sony Ericsson

Press the Menu key (white key)
Tap Settings
Tap Connectivity
Tap Destinations
Tap Access point
Tap No to the question,Automatically check for available access points?
Tap Packet data
Tap the text box to enter lycamobile when entered tap the green tick, then tap OK
Tap WAP services
On the Network destinations screen, tap WAP services
Tap lycamobile
Skip past Connection name and Data bearer as you've already filled these in
Tap Access point name and tap the text box to enter: data.lycamobile.tn when entered tap the green tick, then tap OK
Tap Username and tap the text box to enter lmfr when entered tap the green tick, then tap OK
Skip past Prompt password as this is preset at No
Tap Password and tap the text box to enter password: plus when entered tap the green tick, then tap OK
Tap Authentication until it shows Normal
Tap Homepage and tap the text box to enter: www.lycamobile.tn when entered tap the green tick, then tap OK
Tap Use access point until it shows After confirmation
Tap Options and then tap Advanced settings
Skip past Network type as this is preset to IPv4
Skip past Phone IP address and DNS address as these are preset to Automatic
Tap Proxy server address: disable
Tap Back twice
Tap Options
Tap Organize and then tap Change priority
Tap the position you require (this would usually be number 1) and then tap OK
Tap Back five times, to return to the standby screen.