The description of Samung mobiles often says EU version or CH version. Are there any differences here? If so, what are the advantages/disadvantages of the usually cheaper EU version? According to the manufacturer number I see e.g. SM-S931BDBGEUE but also SM-S931BDBGEUB? In the past it was said that some payment systems did not work or updates did not run. However, I don't believe that Samsung makes separate updates especially for CH.