Here are some photos taken with my Smartphone Sony Xperia Z2. Smartphone camera has improved tremendously since I had my first camera phone more than 10 years ago. In the past, I have never taken camera phone seriously. Today, I must say camera phone has came a long way.
Basis photography rules still apply in smartphone. Ensure sufficient natural lights to capture a good photo. Avoid shooting against the sun light. Avoid using digital zoom. If need be, crop your photo instead.
Don't write off your smartphone camera yet!