Smartphone Photo to 4x6 Print
A modern smartphone captures images around 4032 x 3024 pixels. At 300 DPI, this gives you a clean 13.4 x 10.1 inch print. A standard 4x6 print needs no cropping if your phone shoots in 3:2 ratio. You can also go up to 5x7 with minimal crop.
Best fit: 4x6 at 300 DPI (Excellent quality)