Bad indoor pics

I don't have any issues. What specifically are you seeing that is off undoor pics? I would think if something was off with the camera it would not matter whether it was indoors or outdoors
 
I don't have issues either unless in very dim environment and the night mode comes and photo is bit noisy. In reasonable lit environment, photos turn out great.
 
If you want you could shoot pro in RAW and twitch the iso up a bit or whatever. Theres a number of options. AS far as getting the proper picture, its totally 100% achievable with some basic photography knowledge. Its the regular ole automated camera mode that seems to lag behind other phones.. The ACTUAL camera module software in the z3 is equal if not superior to the s22u. (the hardware is not). A little talent (practice) and post processing and the z3 produces as good a shot as ANY phone.