Open Settings
and select General > Positioning > Positioning server.
To change or disable the SUPL dialog, select Positioning server use.
To connect to the positioning server, select Access point to
select the Access point
.
To enter the URL address of the server, select Server address.
The positioning server may be preset for your device by your service provider, and you may not be able to edit its settings.
To save your settings, select Back.