You will find a number of postings about this on this forum - a good starting place would be https://talk3g.co.uk/showthread.php?t=857 which are the settings for the LG U81xx. Or there was a discussion at https://talk3g.co.uk/showthread.php?t=2099

This topic has come up several times and there are more elsewhere on the forum, so if the above does not give you all that you want then try a search on here for what you're after.

The only thing to bear in mind is that there is no "generic" browser homepage URL. 3 have created specific homepages for each and every 3G handset that they have in their portfolio. Some will work across other handsets, but it is a bit of a guessing game.

For example http://mobile.three.co.uk/hb/lg/HutchKey is specific to the LG U81xx series (it may work on other LG, I've not tested it). The Motorola C975 has its own URL http://mobile.three.co.uk/hb/C975/HutchKey - but it is not always quite so obvious!!

More info; this is the text of an instruction I have for the C975 - if the handset you are programming has other parameters leave them defaulted or blank, these are all the settings that need to be established.


Go to Connectivity
Data Communication
Data Accounts
New Account
PS Data
Give it a name - Three
APN - three.co.uk
Save
Edit
Password Request - Off
Allow Calls - Automatic
IP Address - Blank
DNS Address - Blank
Authentication - Tick Normal, Secure and None
Data Compression - Off
Header Compression - Off

Go to Connectivity
Data Communication
Internet Settings
Internet Profiles
New Profile
Name - Three WAP
Connect Using - Three (named earlier)
Save
Highlight and Select More
Settings
Internet Mode - Http
Use Proxy - No
Save
Highlight and Select More
Advanced
Change Homepage
Name - 3 Services
Address http://mobile.three.co.uk/hb/C975/HutchKey
Save

Go to Connectivity
Data Communication
Internet Settings
Internet Profiles
New Profile
Name - Three MMS
Connect Using - Three (named earlier)
Save
Highlight and Select More
Settings
Internet Mode - WAP
IP Address - 217.171.129.2
Security - Off
Username - (blank)
Password - (blank)
Save
Highlight and Select More
Advanced
Change Homepage
Name - MMS
Address - http://mms.um.three.co.uk:10021/mmsc
Save

Go to Connectivity
Data Communication
Streaming Settings
Connect Using - Three
Use Proxy - No
Save

Go to Connectivity
Data Communication
Internet Settings
Internet Profiles
Select the Three WAP profile

Go to Messaging
Settings
Picture Message
Validity Period - Network maximum
Read Report - On
Delivery Report - On
Content Alert - On
Auto Download - Always
Accept Messages - (Select All)
Message Server - http://mms.um.three.co.uk:10021/mmsc
Internet Profile - Three MMS
Your difficulty will be keying the settings for each discrete handset make and model, they look different and are in different menu places. Making a generic one size fits all is not practical.

Good luck with your project.