Your browser does not support JavaScript.To fully experience our site, please enable it.

Galaxy S9 vs Galaxy S21 5G

Swappasaurus says...

Upgrading from the Galaxy S9 to the Galaxy S21 means you would have skipped a few generations, and that means you will experience a big boost in overall performance. A big reason for the performance is due to the processor, which is an 8-Core Qualcomm Snapdragon 888 in the Galaxy S21. The S21 also brings support for 5G networks, as well as more RAM, more internal storage, and a bigger battery with faster charging. The Galaxy S21 has 8GB of RAM, supports up to 256GB of internal storage, and has a 4000 mAh battery. The battery allows for fast wired charging up to 25W and fast wireless charging up to 15W. It also allows for 4.5W of reverse wireless charging which means you can charge other devices using your Galaxy S21. The front and rear camera setups were also improved with the S21 featuring a 10MP selfie camera on the front with a 12MP wide, 12MP ultrawide, and 64MP telephoto on the back.

Price Comparison

Galaxy S9 vs Galaxy S21 5G Pricing

Galaxy S9 prices start at $92, which is cheaper than the Galaxy S21 5G low price of $153.

Specs Comparison



Size Galaxy S9 Galaxy S21 5G
Width 69 mm 2.7 inches 71 mm 2.8 inches
Height 148 mm 5.8 inches 152 mm 6.0 inches
Depth 9 mm 0.3 inches 8 mm 0.3 inches
Weight 163 g 5.8 ounces 170 g 6.0 ounces


Camera Galaxy S9 Galaxy S21 5G
Primary 12.2 MP 12.2 MP
Resolution 4032x3024 4032x3024


Display Galaxy S9 Galaxy S21 5G
Resolution 1440x2960 1080x2400
Screen Size 147 mm 5.8 in 158 mm 6.2 in
Pixels Per Inch 568 ppi 424 ppi


Battery Galaxy S9 Galaxy S21 5G
Capacity 3000 mAh 4000 mAh
Longevity hours 15 hours


Processor Galaxy S9 Galaxy S21 5G
CPU Qualcomm Snapdragon 845 SDM845 (Napali) Samsung Exynos 2100 5G S5E9840

Color Choices

Galaxy S9

Available in 5 colors:

  • Black
  • Blue
  • Gold
  • Gray
  • Purple

Which Galaxy S9 color should you buy?

Galaxy S21 5G

Available in 4 colors:

  • White
  • Gray
  • Pink
  • Violet

Which color Galaxy S21 5G is the most popular?

Galaxy S9 vs Galaxy S21 5G Colors

The Galaxy S9 introduces three new colors not found in the Galaxy S21 5G color palette: Violet, White, and Pink. Both the Galaxy S9 and Galaxy S21 5G share one color: Gray. However, the Galaxy S9 does away with Black, Blue, Gold, and Purple, previously seen on the Galaxy S21 5G.

Storage Options

Galaxy S9

Choose from 3 storage options:

  • 64GB
  • 128GB
  • 256GB

Which Galaxy S9 storage should I buy?

Galaxy S21 5G

Choose from 2 storage options:

  • 128GB
  • 256GB

Which storage Galaxy S21 5G is the most popular?

Galaxy S9 vs Galaxy S21 5G Storage

Both the Galaxy S9 and Galaxy S21 5G share two storage options: 128GB and 256GB. However, the Galaxy S21 5G does not have options for 64GB, as seen on the Galaxy S9.


Galaxy S9

120 reviews 4.8 stars

Galaxy S21 5G

23 reviews 5.0 stars

Galaxy S9 vs Galaxy S21 5G Reviews

Users rate the Galaxy S9 with 4.8 stars, compared to the Galaxy S21 5G with 5.0 of 5.0 stars.

More Comparisons

Disclosure: This site contains affiliate links to other sites. We may receive commissions for purchases made through these links.

Get Help, Fast


[email protected]

Need help with a listing or a sale?

Submit Help Request

Helpful Links

Swappa's typical response time for help requests is around 20 minutes... That's really fast

Cart, Full of Deals

Your cart is empty :(

Login for Deals