Compare Mobile Phones Side-by-Side

Samsung Galaxy S21 Ultra 5G vs Apple iPhone 17 Slim

Samsung Galaxy S21 Ultra 5G

$989

90% SPEC SCORE

Apple iPhone 17 Slim

$1,073

86% SPEC SCORE

Tesla Pi Phone

$838

85% SPEC SCORE

Tecno Phantom V2 Fold

$1,077

86% SPEC SCORE

OVERVIEW

Display

Screen Size: 6.8 inches

(1440 X 3200 pixels)

120 Refresh rate

Screen Size: 6.65 inches

(1284 X 3200 pixels)

120 Refresh rate

Camera

108+10+10+12 MP (Quad Camera)

40 MP Selfie

8K Video

50 MP (Single Camera)

24 MP Selfie

4K Video

Hardware

Exynos 2100 (5 nm) - International

Bionic A18

Android 11

One UI 6

iOS 19

Battery

Li-Ion

5000 mAh

Li-ion

5100 mAh

Storage

12GB RAM, 128GB

8GB RAM, 128GB

NETWORK

Technology

GSM / CDMA / HSPA / EVDO / LTE / 5G

GSM / HSPA / LTE / 5G

LAUNCH DATE

Announced Date

2021, January 14

Released Date

2021, January 29

2025, September (Expected)

Status

Available

Rumored

DISPLAY

Type

Dynamic AMOLED 2X, HDR10+, 1500 nits (peak)

Color OLED Screen

Refresh Rate

120 Hz

Size

Screen Size: 6.8

Surface Area: 112.1 cm²

Screen To Body Ratio: 89.8%

Screen Size: 6.65

Resolution

1440 x 3200 pixels, 20:9 ratio

1284 x 3200 pixels, 20:9 ratio

Pixel Density

515 ppi

518 ppi

Protection

Front Protection: Corning Gorilla Glass Victus

Always on Display

Yes

BODY

Dimensions

Height: 165.1 mm (6.5 inch)

Width: 75.6 mm (2.98 inch)

Depth: 8.9 mm (0.35 inch)

Weight

227g (8.01 oz)

Build

Glass front (Gorilla Glass Victus), glass back (Gorilla Glass Victus), aluminum frame

SIM

Nano-SIM and eSIM or Dual SIM (2 Nano-SIMs and eSIM, dual stand-by)

Dual Sim, GSM+GSM

Resistance

IP68 dust/water resistant (up to 1.5m for 30 min)

Other

Stylus support

MAIN CAMERA

Rear Camera

Quad Camera:

➤ 108 MP, f/1.8, 24mm (wide), 1/1.33", 0.8µm, PDAF, Laser AF, OIS
➤ 10 MP, f/4.9, 240mm (periscope telephoto), 1/3.24", 1.22µm, dual pixel PDAF, OIS, 10x optical zoom
➤ 10 MP, f/2.4, 72mm (telephoto), 1/3.24", 1.22µm, dual pixel PDAF, OIS, 3x optical zoom
➤ 12 MP, f/2.2, 13mm (ultrawide), 1/2.55", 1.4µm, dual pixel PDAF, Super Steady video

Single Camera:

➤ 50 MP, f/1.5, AF

Features

LED flash, auto-HDR, panorama

HDR, Panorama

Video

8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS

4K@30fps, 1080p@30fps

SELFIE CAMERA

Single

40 MP, f/2.2, 26mm (wide), 1/2.8", 0.7µm, PDAF

24 MP, (depth)

Features

Dual video call, Auto-HDR

Video

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

4K@30fps, 1080p@30fps

SOFTWARE & HARDWARE

Current Version: Android 11

Upgradable To: Android 14

Custom UI: One UI 6

Current Version: iOS 19

Chipset

Processor: Exynos 2100 (5 nm) - International

Processor: Bionic A18

CPU

Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International

Octa-core

GPU

Mali G78 MP14 - International

Apple GPU

BATTERY

Type

Li-Ion

Li-ion

Capacity

5000 mAh

5100 mAh

Removable

Charging

25W wired PD3.0

15W wireless (Qi/PMA)

4.5W reverse wireless

Fast Charging

45W Wireless Charging

Music Play

100 hours

STORAGE

Internal Memory

128GB 12GB RAM, 256GB 12GB RAM, 256GB 16GB RAM, 512GB 12GB RAM, 512GB 16GB RAM

128GB 8GB RAM

Card slot

Storage Type

UFS 3.1

CONNECTIVITY

WLAN

Wi-Fi 802.11 a/b/g/n/ac/6e, dual-band, Wi-Fi Direct

Yes, Wi-Fi Direct

Bluetooth

5.2, LE, A2DP

5.4

Positioning

GPS, GLONASS, BDS, GALILEO

GPS, Glonass

NFC

Yes

Radio

Yes

USB

USB Type-C 3.2, OTG

USB Type-C

Infrared port

SOUND

Loudspeaker

Yes, with stereo speakers

Yes

Sound jack

Other

32-bit/384kHz audio, Tuned by AKG

PERFORMANCE

AnTuTu Score

657150 v8

GeekBench

3518 v5.1

GFXBench

33fps ES 3.1 onscreen

SENSORS

Features

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

Accelerometer, gyro, barometer, proximity

Other

Samsung DeX, Samsung Wireless DeX (desktop experience support), Ultra Wideband (UWB) support

MISCELLANEOUS

Colors

Phantom Black, Phantom Silver, Phantom Titanium, Phantom Navy, Phantom Brown, Navy

Black, Blue

Models

SM-G998B, SM-G998B/DS, SM-G998U, SM-G998U1, SM-G998W, SM-G998N, SM-G9980

SAR

0.77 W/kg (head) 1.02 W/kg (body)

SAR EU

0.71 W/kg (head) 1.58 W/kg (body)

Which Mobile Phone is Better: Samsung Galaxy S21 Ultra 5G or Apple iPhone 17 Slim ?

Have a look at the benefits of this Samsung Galaxy S21 Ultra 5G and Apple iPhone 17 Slim given by our tech specs.

Pros of Samsung Galaxy S21 Ultra 5G

Offers a 2% larger screen (6.8 inches vs 6.65 inches), ideal for media consumption and gaming.
Supports 2x higher resolution (108MP vs 50MP), offering incredible photo clarity and detail.
Supports higher RAM capacity compare to Apple iPhone 17 Slim, enabling faster switching between apps and better performance in demanding applications
Samsung Galaxy S21 Ultra 5G offers significantly more storage, perfect for users needing ample space for their media collections.