Just starting with the pixel count, images are not especially sharp. Tablets do not typically have sensors bigger than 8MP, but the images from the Tab prime 6 do lack that bit of extra detail.
Colours are mostly okay, but images can appear washed-out. Strong ambient lighting allows for better shots, but you are not guaranteed results with this camera. One major issue is that the camera struggles to focus – as there is no tap-to-focus feature as with most other smartphones and tablets. This just means it is a hope-for-the-best lottery when taking photos.
HDR on (left) compared with HDR off
Another issue is HDR mode. Usually it can save a budget camera unit by creating well-balanced photos with greater contrast. However, I found it actually did the opposite – as you can see above. Overall, I would stay stick to your smartphone’s camera for your photography.