iPhone 17 Pro vs Galaxy S25 Ultra: size comparison
Galaxy S25 Ultra is 12.8 mm taller and 5.7 mm wider than iPhone 17 Pro. iPhone 17 Pro would fit inside the outline of Galaxy S25 Ultra.
iPhone 17 Pro measures 150.0 x 71.9 x 8.75 mm (height x width x thickness), while Galaxy S25 Ultra measures 162.8 x 77.6 x 8.2 mm.
Both phones are drawn to the same scale on a grid where each square is 10 mm. Blue is iPhone 17 Pro, coral is Galaxy S25 Ultra.
| iPhone 17 Pro | Galaxy S25 Ultra | Difference | |
|---|---|---|---|
| Height | 150.0 mm | 162.8 mm | +12.8 mm |
| Width | 71.9 mm | 77.6 mm | +5.7 mm |
| Thickness | 8.75 mm | 8.2 mm | -0.55 mm |
Drag them in the size toolSee them at true size
What the size difference means in daily use
One-handed use
Galaxy S25 Ultra is 5.7 mm wider (77.6 mm against 71.9 mm). Width is the number that changes one-handed comfort most, so the narrower iPhone 17 Pro is likely to be easier to use with one hand, although hand size and grip matter a lot. Phones around 77 mm wide or more are usually the ones people describe as large.
Pockets and bags
Galaxy S25 Ultra is 12.8 mm taller, which mostly affects how deep it sits in a pocket and how far your thumb must stretch to the top edge. iPhone 17 Pro is slightly thicker, by 0.55 mm, which you may feel in a slim pocket.
Cases and screen protectors
Because the height or width differs by about a millimetre or more, a case or screen protector made for iPhone 17 Pro is unlikely to fit Galaxy S25 Ultra. Always buy accessories listed for the exact model.
Frequently asked questions
Is Galaxy S25 Ultra bigger than iPhone 17 Pro?
Galaxy S25 Ultra is 12.8 mm taller and 5.7 mm wider than iPhone 17 Pro. iPhone 17 Pro would fit inside the outline of Galaxy S25 Ultra. Thickness differs by 0.55 mm.
Will a case for iPhone 17 Pro fit Galaxy S25 Ultra?
Because the height or width differs by about a millimetre or more, a case or screen protector made for iPhone 17 Pro is unlikely to fit Galaxy S25 Ultra. Always buy accessories listed for the exact model.
Which is easier to hold with one hand, iPhone 17 Pro or Galaxy S25 Ultra?
Galaxy S25 Ultra is 5.7 mm wider (77.6 mm against 71.9 mm). Width is the number that changes one-handed comfort most, so the narrower iPhone 17 Pro is likely to be easier to use with one hand, although hand size and grip matter a lot. Phones around 77 mm wide or more are usually the ones people describe as large.
About these numbers
Sizes are height x width x thickness in millimetres, taken from manufacturer and retailer spec pages and phone databases. Thickness can differ slightly by colour or back material, and where sources show a range we use the larger value. If you spot a wrong number, please tell us and we will fix it.