Paul (MVP) over at Modaco has an interesting tip on increasing the speed of surfing and downloading pages on a mobile browser of Windows Mobile (which can also be used on Nokia S60 phones too).
The trick is to change from the default DNS server of your carrier in the Access Point of your mobile phone to a freely available public DNS server of OpenNIC or OpenDNS

For Windows Mobile Pocket PC

- From the Start Menu, select ‘Settings’, then select the ‘Connections’ tab
- Select the ‘Connections’ option
- Select the first of the two ‘Manage Existing Connections’ options
- Highlight your GPRS Internet connection, and click edit
- Click ‘Next’
- Click ‘Advanced’
- Click ‘Servers’
- Click ‘Use specific server address’ and enter DNS as ‘217.115.138.24′, Alt DNS as ‘83.217.93.246′. You can leave both WINS settings as ‘0.0.0.0′ at this stage.
- Click ‘OK’
- Click ‘Finish’

For Windows Mobile Smartphone

- From the Start Menu, Select ‘Settings’
- Select ‘Connections’
- Select ‘GPRS’
- Ensure your main GPRS Internet connection is selected, and press ‘Menu’ then ‘Edit’
- Modify the Primary DNS entry to read ‘217.115.138.24′
- Modify the Secondary DNS entry to read ‘83.217.93.246′
- Press ‘Done’ 4 times

For Nokia S60 smartphones
-Go to Tools—>Settings—>Connection—>Access Points and then select you wireless data access point.
-In Edit mode select Options—>Advanced settings and scroll down where you will see an option to specify DNS addresses. After you enter the primary address the secondary one will be highlighted.

If you want to use OpenDNS’ servers, they are:

208.67.222.222
208.67.220.220

A lot of users have noticed a huge difference and hopefully you will too.