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The second problem I had with my Samsung G600 was with configuring GPRS/EDGE. I use the AIS network in Thailand (brand name 1-2-Call) and tried to follow the instructions through the AIS Call Centre. The first attempt last night I told them my phone and they send me the SMS for Over-the-Air (OTA) configuration of GPRS. However when I tried to view the SMS my phone returned an error Wrong PIN ID!. I couldn't find any PIN settings relating the messages, and so I contacted the Call Centre again and they said they thought I said D600 (and sent me the configuration for the wrong phone). The said someone would call me the next day. They didn't (in all fairness, my phone ran out of credit just before our conversation ended - but they did have both my mobile number and work number to call!).

So I tried again tonight. After making it clear it was the G600, they resent the SMS but the same Wrong PIN ID! error occurred. I quick search on the Internet found all the details I needed to configure GPRS myself.

In the menu I selected: Applications -> Internet (called t-zones on my phone) -> Browser settings -> Browser Profiles and then edited a new profile with the following settings:

Profile name: AIS
Home URL: http://google.com
Bearer: GPRS Only
Proxy: Disable
GPRS Settings: 
   DNS1: 202.183.255.20
   DNS2: 202.183.255.21
   APN: internet
   Login: blank
   Password: blank
GSM Settings: I didn't change

Then Internet access worked fine. You may want to do the same GPRS settings for Messages -> Settings -> Multimedia messages -> Multimedia message profile.