GPRS/3G activation for LG E400 Optimus L3

SOURCE: gprs settings and mms settings airtel prepaid connection

I think you are asking for the phone settings for airtel gprs. Sinceyou haven't mentioned whether you want for airtel live or mobileoffice, i've provided you both.
Airtel live:
Connection Name> Airtel Live
Data bearer>gprs
Access point name>airtelfun.com
User Name/Password>(leave blank)
Authentication>Normal
Homepage>live.airtelworld.com
IP Address>100.1.200.99
Connection Security>Off
Session mode>Permanent
Mobile Office:
Connection Name>Mobile Office
Access Point Name>airtelgprs.com
Homepage>www.google.com
IP Address>0.0.0.0

Manual Airtel Gprs Settings

1. Homepage - any page you want to set.
2. User Name - Blank
3. Password - Blank
4. Proxy - Enabled/yes.
5. Proxy and Server Adress - 202.56.231.117
6. Proxy and Server Port - 8080
7. Data bearer - GPRS or Packet Data.
8. Access Point Name - airtelgprs.com
9. Authentication Type - Normal
10. Use preferred access point - No

1. Account Name - Airtel_live
2. Homepage - http://live.airtelworld.com
3. Username - Blank
4. Password - Blank
5. Proxy - Enabled/yes
6. Proxy and Server Adress - 100.1.200.99
7. Accespoint Name - airtelfun.com
8. Proxy and Server Port - 8080
9. Data bearer - GPRS/ Packet Data
10. Authentication Type - Normal

Jordan Raingam

• 2148 Answers
• Posted on Aug 05, 2011

SOURCE: i activated bsnl GPRS

NOKIA 5800 TO 58355 The sms you have sent is right.Sometimes it may occur due network problem so in my comment please repeat the procedure.Good luck

SOURCE: Activation Of GPRS & Settings of GPRS

pls give gprs is active but pls give setting

SOURCE: GPRS

these settings are supplied by your provider.
you need to contact them for this

SOURCE: how to activate & send mms in samsung s8000 mobile

you need to configure the mms settings from your internet menu... but you need the right configuration from your network provider to the settings.. 
to give you an idea, here's how you may do it.. from your phone, press menu select internet select browser profiles to lead you to internet profile settings.. from your settings, press create.  then create the mms profile your network preferred.  once created, press save and exit the settings for internet profiles.. 
to make the mms profiles be the default settings for your mms, do thes steps... from your phone, press menu select settings select phone applications select messages select multimedia from multimedia menu, select profiles assign the mms profiles you created for your multimedia. press save and exit the setup... 
now to check if it's working, try sending a multimedia message to your own number to check if your phone can send and receive mms. once you successfully send it and received it, it means that your phone mms is already set and working...
take care..