I’m really trying to be super nice here so please give me the benefit of the doubt and read this post in the kindliest voice you can:
The generation of data transmission standard supported is separate from the band of radio frequencies which are allowed in a given jurisdiction. You can do 4g lte for example over several different swaths of the spectrum with no problem as long as the devices are all talking on the same frequencies.
Not all phones allow for transmission across all frequencies. This means that a phone could have a radio chipset that’s band limited in such a way that it can’t function in a different country where the electromagnetic spectrum is portioned up differently.
When I say radio here I’m talking about transmission of data in the range of frequencies used by mobile phone wireless carriers.
I’m, again, trying to be kind and helpful here: if you haven’t already, it may behove you to directly contact the company you intend to buy a sim from (or purchase an eSIM from) and verify by checking your device’s imei or serial that it is 100% compatible with the radio spectrum used for cellular data transmission in your destination.
Manufacturers use the same model number with different radio capabilities or even radio chips all the time.




I hope you encounter no problems.