All the sensors! - Which device?

[neuer-Lehrer]

It took some time, but now I have a used Samsung Galaxy S4
(GT-I9515 with Android 5.0.1).

Problem:
Humidity and Temperature aren't listed as sensors in the app.
But in the device info of phyphox (i) those sensors are listed.

What do I have to do to use the humidity and temperature sensor in phyphox?
- Upgrade Android?