Samsung · Galaxy S

Galaxy S21 FE Screen Size

Name: Galaxy S21 FE
Brand: Samsung

The Galaxy S21 FE features a 6.4 inches Dynamic AMOLED 2X display with a resolution of 2400 × 1080 (2400 × 1080 pixels), delivering 411 PPI pixel density. Released in 2022, this phone offers 120Hz LTPO refresh rate and peak brightness of 1200 nits peak.

2022

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Compare Galaxy S21 FE withGalaxy S26 Galaxy S26+Pixel 6

Screen Size

6.4 inches

Resolution

2400 × 1080

Pixel Density

411 PPI

Display Type

Dynamic AMOLED 2X

Actual Size

Device outline scaled to relative proportions using physical dimensions.

Compare actual size →

74 × 155.7 mm

Display DNA

A fingerprint of the Galaxy S21 FE's display characteristics — screen size, panel type, refresh rate, pixel density, and brightness combined into a unique profile.

OLED120Hz LTPO411 PPI20:96.4 inchesHDRPeak nits

6 of 7 display traits active

Similar screen size

Redmi Note 1195% similar Pixel 694% similar iPhone 1792% similar POCO F7 Pro81% similar

Computed Display Data

Derived measurements calculated from the Galaxy S21 FE's physical dimensions and resolution — unique values not found on standard spec sheets.

Screen Area

115.2 cm²

Diagonal

16.3 cm

Pixels per Frame

2.59 million

CSS Viewport

360 × 800

Width

74 mm

Height

155.7 mm

One-Hand Use

★★★☆☆ (Moderate)

Aspect Ratio

20:9

Display Rankings

Where this device ranks among all phones in our database.

View all rankings →

#92

highest PPI

of 124 phones · See full ranking

#103

brightest display

of 124 phones · See full ranking

#85

largest screen

of 124 phones · See full ranking

#63

highest refresh rate

of 124 phones · See full ranking

How Big Is 6.4 inches?

The Galaxy S21 FE's 6.4" screen compared to everyday objects by diagonal length.

Credit card3.4"

iPhone SE4.1"

Nintendo Switch6.2"

Kindle Paperwhite6.4"

Galaxy S21 FE6.4 inches

iPad mini8.0"

Galaxy S21 FE Screen Resolution & Display Specifications

The Galaxy S21 FE's screen measures 6.4 inches (16.3cm) diagonally, with physical dimensions of 2.91 inches (74.0mm) wide by 6.11 inches (155.7mm) tall. The Dynamic AMOLED 2X panel technology ensures vibrant colors with 24-bit color depth and a 20:9 aspect ratio, making it ideal for mobile content consumption and photography.

With its 120Hz LTPO display, the Galaxy S21 FE provides exceptionally smooth scrolling and responsive touch interactions. This high refresh rate technology is particularly beneficial for gaming, video playback, and everyday scrolling.

Screen Size	6.4 inches
Resolution	2400 × 1080
Pixel Density	411 PPI
Display Type	Dynamic AMOLED 2X
Aspect Ratio	20:9
Color Depth	24-bit
Refresh Rate	120Hz LTPO
Brightness	1200 nits peak

Galaxy S21 FE Screen Dimensions

At 411 PPI, the Galaxy S21 FE delivers sharp, crisp text and images. The total pixel count of 2,592,000 pixels (2400 × 1080) ensures high-definition content rendering. This resolution is ideal for Full HD+ content and everyday use.

For mobile users, the 6.4 inches screen size strikes a balance between portability and usability. The 20:9 aspect ratio is optimized for modern app interfaces and video content.

Width	2.91 inches (74.0mm)
Height	6.11 inches (155.7mm)
Diagonal	6.4 inches (16.3cm)
Total Pixels	2,592,000

More devices to compare

The Galaxy S21 FE sits in Samsung's Galaxy S lineup — here are nearby picks from our database.

Same category

Galaxy S26

Popular

•2026

Screen size

6.3 inches

Resolution

2340 × 1080

Pixel Density411 PPI

Display TypeDynamic AMOLED 2X

Total Pixels2.5MP

Galaxy S26+

Popular

•2026

Screen size

6.7 inches

Resolution

3120 × 1440

Pixel Density513 PPI

Display TypeDynamic AMOLED 2X

Total Pixels4.5MP

More from Samsung

View all →

Developer Quick Copy

Approximate CSS viewport dimensions for responsive development. Values are derived from native resolution and estimated device pixel ratio.

Viewport

360 × 800

Media Query

@media (max-width: 360px)

Tailwind

max-w-[360px]

Frequently asked questions

Is the Galaxy S21 FE bigger than the Galaxy S20 FE?: The Galaxy S21 FE has a smaller screen than (6.4 inches vs 6.5 inches) the Galaxy S20 FE.
Which phones have the same screen size as the Galaxy S21 FE?: Devices with a similar 6.4 inches display include Redmi Note 11, Pixel 6, iPhone 17, POCO F7 Pro.
Is 411 PPI noticeable on the Galaxy S21 FE?: The Galaxy S21 FE's pixel density is lower than average (411 PPI vs ~500 PPI median) for Galaxy S devices. Above 400 PPI, individual pixels are difficult to discern at normal viewing distance.
Can I use the Galaxy S21 FE one-handed?: With a body width of 74 mm, the Galaxy S21 FE rates 3/5 for one-handed use (Moderate). Phones under 72 mm wide are generally comfortable for one-handed operation.
How does the Galaxy S21 FE compare to the Redmi Note 11?: Both have similar screen sizes (6.4 inches vs 6.43 inches). The Galaxy S21 FE offers 2400 × 1080 at 411 PPI, while the Redmi Note 11 has 2400 × 1080 at 409 PPI.

Keep exploring

Tools and guides for screen size, pixel density, and display specs.

Tools

Guides

Screen Resolution vs Screen Size vs Pixel Density (PPI vs DPI Explained)Confused about screen resolution, screen size, and pixel density? Learn the differences between PPI vs DPI, see real-world examples (iPhone 15 vs Galaxy S24), and discover how to calculate pixel density.

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Computed Display Data

Derived measurements calculated from the Galaxy S21 FE's physical dimensions and resolution — unique values not found on standard spec sheets.

Screen Area

115.2 cm²

Diagonal

16.3 cm

Pixels per Frame

2.59 million

CSS Viewport

360 × 800

Width

74 mm

Height

155.7 mm

One-Hand Use

★★★☆☆ (Moderate)

Aspect Ratio

20:9

Galaxy S21 FE Screen Resolution & Display Specifications

Galaxy S21 FE Screen Dimensions

For mobile users, the 6.4 inches screen size strikes a balance between portability and usability. The 20:9 aspect ratio is optimized for modern app interfaces and video content.

Frequently asked questions

Is the Galaxy S21 FE bigger than the Galaxy S20 FE?

The Galaxy S21 FE has a smaller screen than (6.4 inches vs 6.5 inches) the Galaxy S20 FE.

Which phones have the same screen size as the Galaxy S21 FE?

Devices with a similar 6.4 inches display include Redmi Note 11, Pixel 6, iPhone 17, POCO F7 Pro.

Is 411 PPI noticeable on the Galaxy S21 FE?

The Galaxy S21 FE's pixel density is lower than average (411 PPI vs ~500 PPI median) for Galaxy S devices. Above 400 PPI, individual pixels are difficult to discern at normal viewing distance.

Can I use the Galaxy S21 FE one-handed?

With a body width of 74 mm, the Galaxy S21 FE rates 3/5 for one-handed use (Moderate). Phones under 72 mm wide are generally comfortable for one-handed operation.

How does the Galaxy S21 FE compare to the Redmi Note 11?

Both have similar screen sizes (6.4 inches vs 6.43 inches). The Galaxy S21 FE offers 2400 × 1080 at 411 PPI, while the Redmi Note 11 has 2400 × 1080 at 409 PPI.

Galaxy S21 FE Screen Size

Actual Size