Forgot the golden rule, of making hard copies of info.
I arrived at Suvarmabumi airport Thailand with no internet, and the TDAC on my phone.
I managed to get the 1hour airport free internet, but there were hundreds of arrivals.
I was worried my internet would expire, because it showed on the screen to prepare TDAC for inspection.
Luckily I got through with no problem, with all other info on hard copy.