Frame rate issue for mobile

I don't think my issue is normal, because when I play the game in the editor it runs fine, no problems there, when I export the game to a higher end phone, it also runs fine, but when I export it to my Galaxy s7, the frame rate is at a semi consistent 60 fps, but just randomly the frame rate will shoot down to 0, and sometimes will take a little bit to go back to normal, but most times it just doesn't, I don't know what's the main cause of this, so I'd like some tips on how to solve this please.