Third-Party camera apps
As mentioned before, your phone’s camera has limited functions. Consider getting a third-party camera app to overcome those limitations. Some apps like Camera+ (iOS) and ProCapture Free (Android) have additional features alongside the normal phone settings. Others have more specialized functions like Slow Shutter Cam (iOS), Night Cam and Pro HDR (iOS, Android). Many of these third-party apps are regularly updated with new features, filters, modes and options as well. This beats getting a new phone just to get more photo-snapping features to play with.