Redmi A4 vs Samsung Galaxy S25 Ultra – Price, Specs & Features

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Redmi A4

Snapdragon 4s Gen 2
4 nm
5160 mAh
18W
6.88"
720 x 1612 pixels
50 MP
1080p@30fps
Specs

Samsung Galaxy S25 Ultra

Snapdragon 8 Elite
3 nm
5000 mAh
45W
6.9"
1440 x 3120 pixels
200 MP
8K@24/30fps
Specs

Samsung Galaxy S25 Ultra

General

Launch Date

November 20, 2024

January 22, 2025

Availability

Available Now

Android 14

Android 15

Custom UI

HyperOS 1.0

One UI 7

OS Updates

2 Years

7 Years

Security Updates

4 Years

7 Years

AI Features

AI Select, Circle to Search, Cross-app Action, Call Transcript, Writing Assist, Drawing Assist, Audio Eraser, Now Brief, Now Bar and More

Body

Dimensions

171.9 x 77.8 x 8.2 mm

162.8 x 77.6 x 8.2 mm

Thickness

8.2 mm

Weight

212.4 g

218 g

Back Material

Corning Gorilla Armor

Build Details

Glass back, Plastic Frame

Titanium Frame (grade 5)

IP Rating

IP68 (dust tight and water resistant (immersible up to 1.5m for 30 min))

Display

Size

6.88 inches

6.9 inches

Type

IPS LCD

Dynamic LTPO AMOLED 2X, HDR10+, Always-on display, DX anti-reflective coating

Refresh Rate

120 Hz

Peak Brightness

600 nits

2600 nits

Resolution

720 x 1612 pixels

1440 x 3120 pixels

Pixel Density

257 ppi

498 ppi

Aspect Ratio

20:9

19.5:9

Screen to Body Ratio

85.0 %

92.5 %

Protection

Corning Gorilla Armor

Performance

Chipset¹

Qualcomm Snapdragon 4s Gen 2

Qualcomm Snapdragon 8 Elite

Process Size

4 nm

3 nm

CPU

Octa-core
2x2.2 GHz Cortex-A78
6x2.0 GHz Cortex-A55

Octa-core
2x4.47 GHz Oryon V2 Phoenix L
6x3.53 GHz Oryon V2 Phoenix M

GPU

Adreno

Adreno 830

RAM & Storage

4GB 64GB (UFS 2.2)
4GB 128GB (UFS 2.2)

12GB 256GB (UFS 4.0)
12GB 512GB (UFS 4.0)
12GB 1024GB (UFS 4.0)

RAM Type

LPDDR4X

LPDDR5X

Expandable Memory

Yes

Camera

Main Camera

50 MP
f/1.8, (wide)

200 MP
f/1.7, 24mm (wide), 1/1.3", 0.6µm, multi-directional PDAF, OIS

10 MP
f/2.4, 67mm (telephoto), 1/3.52", 1.12µm, PDAF, OIS, 3x optical zoom

50 MP
f/3.4, 111mm (periscope telephoto), 1/2.52", 0.7µm, PDAF, OIS, 5x optical zoom

50 MP
f/1.9, 120˚ (ultrawide), 0.7µm, dual pixel PDAF, Super Steady video

OIS

Yes

Features

LED flash, HDR

Laser AF, Best Face, LED flash, auto-HDR, panorama

Video Recording

1080p@30fps

8K@24/30fps
4K@30/60/120fps
1080p@30/60/240fps

Video Recording Features

10-bit HDR, HDR10+, Stereo Sound recording, gyro-EIS

Selfie Camera

5 MP
f/2.2, (wide)

12 MP
f/2.2, 26mm (wide), 1/3.2", 1.12µm, dual pixel PDAF

Selfie Features

HDR, HDR10+

Selfie Video Recording

1080p@30fps

4K@30/60fps
1080p@30fps

Connectivity

SIM

Dual SIM, GSM+GSM
SIM1: Nano, SIM2: Nano

Dual SIM, GSM+GSM
SIM1: Nano, SIM2: eSIM

SIM 1

7 5G Bands

FDD: N1, N3, N5, N8, N28
TDD: N40, N78

17 5G Bands

FDD: N1, N2, N3, N5, N7, N8, N12, N20, N25, N26, N28, N66
TDD: N38, N40, N41, N77, N78

SIM 2

7 5G Bands

FDD: N1, N3, N5, N8, N28
TDD: N40, N78

17 5G Bands

FDD: N1, N2, N3, N5, N7, N8, N12, N20, N25, N26, N28, N66
TDD: N38, N40, N41, N77, N78

VoLTE

Yes

Wi-Fi

Wi-Fi 5

Wi-Fi 7

Wi-Fi Details

802.11 a/b/g/n/ac 5GHz

802.11 a/b/g/n/ac/be/ax 5GHz 6GHz, MIMO

Wi-Fi Features

Mobile Hotspot

Wi-Fi Direct, Mobile Hotspot

USB

USB Type-C 2.0

USB Type-C 3.2, DisplayPort 1.2, OTG

Bluetooth

5.3

5.4

NFC

Yes

GPS

Yes with A-GPS

Yes with A-GPS, Glonass

Infrared

Yes

UWB (Ultra Wideband)

Yes

Battery

Capacity

5160 mAh

5000 mAh

Type

Li-Polymer

Li-Ion

Removable

Wired charging

18W

45W

Charging Speed

65% in 30 min

Wireless Charging

15W

Reverse Wireless Charging

4.5W

Charger in the Box

Yes

Sound

Stereo Speakers

Yes

3.5mm Headphone Jack

Yes

FM Radio

Extra Features

Sensors

Fingerprint (side-mounted), accelerometer, compass

Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer

Others

Virtual proximity sensing

Samsung DeX, Samsung Wireless DeX

Colors and Pricing

Colors

Sparkle Purple, Starry Black

Titanium Silver Blue, Titanium Black, Titanium Gray, Titanium White Silver, Titanium Jet Black, Titanium Jade Green, Titanium Pink Gold

Price in India

₹7998

₹106670

FAQs

Which phone has better performance?

In this performance comparison, the Samsung Galaxy S25 Ultra with its Qualcomm Snapdragon 8 Elite (3nm) performs better than the Redmi A4 with the Qualcomm Snapdragon 4s Gen 2 (4nm), thanks to superior chipset efficiency.

Which phone offers longer software support?

Samsung Galaxy S25 Ultra offers 7 years of OS updates, whereas Redmi A4 provides 2 years. For security updates, Samsung Galaxy S25 Ultra offers 7 years of support compared to Redmi A4's 4 years.

Which phone has a better display?

Samsung Galaxy S25 Ultra features a superior AMOLED display, while Redmi A4 comes with an LCD panel. Both smartphones offer the same 120 Hz refresh rate. Samsung Galaxy S25 Ultra also boasts a brighter screen with 2600 nits of peak brightness, enhancing outdoor visibility. Notably, Samsung Galaxy S25 Ultra offers a higher screen resolution, resulting in sharper visuals and more detailed content.

Which phone has a bigger battery and faster charging?

Redmi A4 comes with a larger 5160 mAh battery, which may offer longer usage on a single charge. Samsung Galaxy S25 Ultra also supports faster wired charging at 45W, compared to 18W on Redmi A4. Samsung Galaxy S25 Ultra supports wireless charging at 15W, while Redmi A4 lacks this feature.

Which phone has better water and dust resistance?

Samsung Galaxy S25 Ultra includes an IP68 rating, while Redmi A4 lacks an official IP rating.

Can I buy these phones on Amazon?

Redmi A4 – Check price here
Samsung Galaxy S25 Ultra – Check price here

¹ Scores can vary even with the same chipset due to RAM, thermals, and software optimization.