More user friendly 'combobox' on mobile devices

If you have more than 2-3 options in a ‘combobox’ (don’t know what the correct naming is)
You only see 1 or 2 items, so scrolling through it is not very user friendly, you can easily click the wrong one.

I would request the ‘combobox’ to extend in height to the top in that case.
On the desktop in chrome it does that to the bottom, but that’s not handy on a mobile since the climate card is placed at the bottom of the screen.

See before and mockup after. Can somebody have a look if this is possible?
The example screenshots com from my Nexus 6 device running android, I don’t know how this looks on a iPhone for example.

On desktop:

Currently on mobile:

Mockup to get an idea how to improve it:

On mobile or desktop I find the current controls hard to use… Especially when trying to make very small adjustments in temperature.

I’m glad that you started this thread. I’m also irritated by this small issue. It’d be great if the a GUI specialist could address this bug in the future.
Here is how these combo boxes look on my Windows 10 phone, making them really hard to use:

Thank you for noticing this!