"Quality pictures" refers to photographs that are well-made or well-crafted, exhibiting high clarity, sharpness, and overall visual appeal. Full definition
Many of us are drawn to visuals so it's important to make your profile picture eye - catching by using a high quality picture of yourself. (uk.match.com)
Here I would like to add that you should submit a clear and high quality picture of yourself otherwise you verification will be declined and you need to complete the whole process again. (coinscage.com)
The 8MP rear camera is capable of taking good quality pictures in daylight. (techpp.com)