Is this normal camera performance?

[Nick012]

I was wondering if there might be a fault with my iPhone's camera or not. The photos it takes can be exceptionally grainy in even good lighting conditions. Maybe I just bought into the hype about the camera. I haven't had a digital camera for a few years so I don't have anything to test it against... (I am aware that there are limits to what phone cameras can do)

Here are 3 photos as an example:

Outdoors, midday:

Indoors, early afternoon:

Outdoors, night (snow and floodlights):

I think all these were taken with HDR on but I get the same grain without HDR...

 

[triptyx]

The first one looks fine to me grain-wise. The second two are exactly what I'd expect from an automatic digital camera cranking up the ISO to shoot in what is really a dark situation - even indoors in the afternoon.

 

[lewys]

the less light going into the camera the higher the iso has to be so the camera can have a faster shutter speed.

higher iso=more grain

 

[Jack105]

My photos look like that too. Any recommendations for a good HDR app? Is proHDR good?