Andrey

Could you please attach a photo of the output you have and a link to your printer to check its specifications? Thanks!

I have a printer that looks exactly the same, however, the model number is different. Mine works without any issues on iOS. BTW, I can't find the photo your test...

Hi @andrecmp , Have you resolved the issue? Here is my printer' selftest (I guess we have the same hardware but a bit different firmware). You can see 2 major...

Ok, here is the instruction. It could be a bit tricky and your printer may print a self-test instead at the beginning. 

Oh... Then we probably have really different firmwares.. That's still a bit weird because as far I understand, you have no issues under Android. As a last chance, you probably...

Under iOS, have you tried to print using a test app such as this one: https://apps.apple.com/fr/app/pos-printerv1-0/id1133503452 ?

It is not possible by default. But I think you probably still can create 2 Bluetooth managers.

Hi, Have you tried this: https://github.com/andrey-ushakov/esc_pos_utils#using-code-tables ?

I would suggest you print the self-test ticket and check the code page id your printer uses for Thai. It could be 70, 96, 255 or another value depending on...

Have you tried IBM-Thai ?