Please could anyone report on the mobile signal quality in Khao Yai and nearby?

This is particularly useful feedback from anyone who uses an AIS mobile sim dongle and can report un/reliable connection speeds from the area using that or similar equipment for internet.

Thanks in advance.

I seem to recall driving through khao yai and never having a mobile reception...

In and around the park entrance/Pak Chong and etc. no problem.

My friend lived 5 k outside the park entrance and was able to connect with an AIS Air Card Dongle, though speed was not great.

His neighbors had proper internet connections.

From the roads in the park itself we were able to get connections on our phones. From trails fairly deep into the jungle, no connection, so not a good idea to go hiking with your phone and assume that if you get lost you can call for help.

This was approximately 9 months ago.

Thank you for the info.