Bank card vs Smartphone: size comparison
Bank card: 8.56 cm. Smartphone: 14.7 cm. Both silhouettes are drawn at the same scale.
Size ratio: ×1.7
Bank card
8.56 cm
What is measured Width of an ISO/IEC 7810 ID-1 card
Every bank card in the world is 85.60 × 53.98 mm.
Source : Wikipedia — IEC 7810
Smartphone
14.7 cm
What is measured Height of a smartphone with a 6.1-inch screen
Screen size is measured diagonally: 6.1 inches is about 15.5 cm.
Source : Wikipedia — Smartphone