Talk:Las Vegas Official Bout/@comment-37189271-20190831120928/@comment-30314236-20190831131147

For Android, it must be version 4.1 or onward. On iOS, 10.0 or onward. Also, certain phones with Intel CPU won't be able to access the game. There's a list of said phones with Intel done by Deyu.

https://fategrandorder.fandom.com/wiki/List_of_Intel_CPU_Mobile_Devices

If yours isn't here and fulfill the other system criteria, you should be safe.