Of late my international calls have been cut - with a musical chime - after 5 mins 14 secs, as seen on my call log.

 

I use AIS pre paid with the 009 dialing prefix on a Galaxy J7

Logic tells me that it should not be a service provider issue, they wanting to fleece as much of my credit as possible.

 

I'm not using any sort of a 3rd party app to control calls but just had a major firmware upgrade which seems to co-inside with the problem.

 

Anyone seeing similar problems?

Try;

 

http://www.ais.co.th/00500/en/

 

Same price I think..

Prefix 003 works well also.