A:Answer It does work with my S20 Ultra in a thin case, The phone is nearly as wide as the Note 9 but the case would be the biggest factor I say. There is a little wiggle room, so you may be safe, I don't know how much the rubber piece may resist a thicker case such as an otterbox since I don't have something comparable to test it out. I do not have the thumb sticks on in my shots since I took it out to take pictures.
