It depends on how you’re holding it and how spread that heat is. 46° isn’t something great to be grasping for extended periods of time, but if you’re physically touching 30°C parts of the phone and a part with no physical contact with your skin is 46°C, it’s probably not that bad.

My s7 edge used to hit these temps. The annoying part was the throttling and shutdowns. I never really felt like I was burning my hands using the thing.