For a good year. I used my NOKIA C7 with D-Tac and GPS and Google Maps, finding my way everywhere.

But since month Google maps only works when I am connected to WIFI.

When I try to connect to D-Tac, the display shows, -You are not connected to a Network-

Somebody understand that? Legal matters, license problems? Also a Google did not give me an answer.

Has your subscription to the DTAC data service run out?

Do you have a pre-paid or post-paid account?

Google Maps works fine for me on DTAC; in fact Navigation now seems available for Thailand!

If you could provide more details maybe someone could help?

Is your DTAC network connection actually working? Did Google Maps recently update?

I suspect it is some Settings issue, whereby the system defaulted to WiFi only to protect against data usage over GSM.

You may have to grind through both Google Maps settings and those of your device?

Google maps work OK with AIS on my android phone but still no navigation. I downloaded the latest Google maps from the Android market but still get the message of no navigation for my area.

still no standard navigation for me on 2.2 or 2.3

I suspect if using prepay your internet account has expired? You can check status on phone or set up internet account to check at http://eservice.dtac.co.th/bp3/bin/DpromptIndex

You can also subscribe to various internet plans from phone once you have it enabled to GPRS service (I found out by chance as is not accepted until you do that). But you must have that if working before and enough money in account to cover the cost.

An easy test is to enable GPRS/EDGE (APN) and see if you can connect to any web site through the phone browser. If not, then an issue with your DTAC service.

I am running Android 4.0.3 and Google Maps 6.1.1, Navigation is enabled for me here in Thailand, without any hack or modification (my phone was wiped prior to flashing a new kernel and ICS), although it does say "Beta" when the Navigation app. opens.

Thank you for your answers and postings.

I used Internet packages with D-tac and I believe, Google maps stopped working, connecting, without I changed anything.

I Googled about that problem and could find in the Internet many complains about that problem.

People wrote with a WIFI connection they could connect to Google maps and with the normal Mobile signal-Internet Package they could not, it did not work. Same it was with me!

But on the Laptop, it did work with the same connection!

As the Signal strength with D-tac got weaker in my Isaan village, I changed to AIS and just now writing and reading here,

I tried it again with the AIS SIM card and my mobile and the mobile asked me to open the AIS IDEAS-WAP connection with the already opened Internet connection to and now it works!

I will try it next time with my D-tac SIM card to, but magic and surprise it works now! Good!

I had a problem with my DTAC pre-paid service recently. For hours at a time no connection, neither for phone calls nor for data services. Went to a DTAC shop, the man used an standard eraser to clean the contacts of the chip, and everything worked fine after that. Low-tech to fix a high-tech problem