我想知道如何讲述三星Galaxy A5 2017之间的区别与XEU或与BTU之类的东西闪现。那是如果它已经安装了，如果我不知道它是什么类型。
i'm wondering how to tell the difference between a Samsung Galaxy A5 2017 flashed with something like XEU or one with BTU. That is if it's already installed and if I don't know what type it is.
Any answers are appreciated. Thanks.
XEU or BTU (...) are Samsung CSC codes. CSC stands for Country Specific Code. It is unique for each country or region or network carrier. This website lists them all.
So to check which CSF file your Samsung device has, try the following:
Settings > About phone > Software information then you should see something like
Service provider SW version, see screenshot below: Here AIO is the CSC.