Phone Comparison - Realme X3 SuperZoom vs Samsung Galaxy S21 Ultra 5G vs Samsung Galaxy A56

Price Comparison (India) -

general General Info

Manufacturer Realme Samsung Samsung
Announced 2020, May 26 2021, January 14 March 2025
Status Coming soon. Exp. release 2020, June 02 Coming soon. Exp. release 2021, January 29 Coming Soon - March 2025
Price Rs. 27,999 ($0.00) [Similarly Priced] Rs. 105,999 ($0.00) [Similarly Priced] Rs. 41,999 ($0.00) [Similarly Priced]
Colors Glacier Blue, Arctic White Phantom Black, Phantom Silver, Phantom Titanium, Phantom Navy, Phantom Brown Pink, Olive, Graphite, Lightgray
Form Factor Candybar Candybar Candybar
Dimension 163.8 x 75.8 x 8.9 mm
(6.45 x 2.98 x 0.35 in)
165.1 x 75.6 x 8.9 mm
(6.5 x 2.98 x 0.35 in)
162.2 x 77.5 x 7.4 mm
(6.39 x 3.05 x 0.29 in)
Weight 202 g (7.13 oz) 227 g (8.01 oz) 198 g (6.98 oz)
SIM Type Dual SIM (Nano-SIM, dual stand-by) Single SIM (Nano-SIM and/or eSIM), Hybrid Dual SIM (Nano-SIM, dual stand-by) -
2G Network GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (Dual SIM model only)
CDMA2000 1xEV-DO
GSM 850 / 900 / 1800 / 1900
3G Network HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G Network LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 13(700), 17(700), 18(800), 19(800), 20(800), 25(1900), 26(850), 28(700), 32(1500), 38(2600), 39(1900), 40(2300), 41(2500) LTE 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 25, 26, 28, 32, 38, 40, 41, 66
5G Network - SA/NSA/Sub6/mmWave 1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78 SA/NSA/Sub6
SAR EU - W/kg (head)
- W/kg (body)
- W/kg (head)
- W/kg (body)
0.61 W/kg (head)
1.05 W/kg (body)
Messaging
Build Features - Fingerprint Sensor (side-mounted)
Glass front, plastic back, plastic frame
- Fingerprint Sensor (under display, ultrasonic)
Samsung Pay (Visa, MasterCard certified)
IP68 dust/water resistant (up to 1.5m for 30 mins)
Stylus support
Samsung DeX, Samsung Wireless DeX (desktop experience support) ANT+
- Fingerprint Sensor (under display, optical)
IP67 dust/water resistant (up to 1m for 30 min)

hardware Hardware and OS

OS Android 10.0 Android 11 Android 15, up to 6 major Android upgrades
User Interface Realme UI One UI 3.0 One UI 7
Processor Octa-core (1x2.96 GHz Kryo 485 & 3x2.42 GHz Kryo 485 & 4x1.78 GHz Kryo 485), Qualcomm SM8150 Snapdragon 855+ (7 nm) Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International / Octa-core (1x2.84 GHz Kryo 680 & 3x2.42 GHz Kryo 680 & 4x1.80 GHz Kryo 680 - USA/China/Korea, Exynos 2100 - Global / Qualcomm Snapdragon 875 - USA Octa-core (1x2.9 GHz & 3x2.6 GHz & 4x1.9 GHz), Exynos 1580 (4 nm)
GPU Adreno 640 (700 MHz) Mali-G78 MP14 - International / Adreno 660 - USA/China/Korea Xclipse 540
RAM 12 GB 16 GB 12 GB
Internal Memory 256 GB 512 GB 256 GB
External Memory No microSDXC (uses shared SIM slot) No

display Display

Type IPS LCD Capacitive Touchscreen
Corning Gorilla Glass 5
120Hz refresh rate
QHD+ Dynamic AMOLED 2X Display
120Hz Refresh Rate
HDR10+
1500 nits (peak)
Corning Gorilla Glass Victus
Always-on display
FHD+ Super AMOLED Screen
120Hz, HDR10+, 1200 Nits (HBM), 1900 Nits (peak)
Corning Gorilla Glass Victus+ Protection
Colors 16M colors 16M Colour 16M colors
Size 6.6 inches 6.8 inches 6.7 inches
Resolution 1080 x 2400 pixels (399 ppi) 1440 x 3200 pixels (516 ppi) 1080 x 2340 pixels (385 ppi)
Screen-to-Body Ratio 84.60% 89.46% 87.51%
Multi-Touch yes yes yes

multimedia Multimedia

3.5mm Jack no no no
Radio No FM radio (Snapdragon model only; market/operator dependent) No
Games Yes + Downloadable Yes + Downloadable Yes + Downloadable
Loud Speaker yes

camera Camera

Rear Camera 64 MP + 8 MP + 8 MP + 2 MP 108 MP + 10 MP + 10 MP + 12 MP + 0.3 MP 50 MP + 12 MP + 5 MP
Flash LED flash LED flash LED Flash
Features 64 MP, f/1.8, 26mm (wide), 1/1.76", 1.8µm, PDAF
8 MP, f/3.4, 122mm (periscope telephoto), PDAF, OIS, 5x optical zoom
8 MP, f/2.3, 119˚ (ultrawide), 1/4.0", 1.12µm
2 MP, f/2.4, (macro)
HDR, panorama
108 MP (2nd gen), f/1.8, 26mm (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, 70mm (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
auto-HDR, panorama
50 MP, f/1.8, (wide), 1/1.56", 1.0µm, PDAF, OIS
12 MP, f/2.2, 123˚ (ultrawide), 1/3.06", 1.12µm
5 MP, f/2.4, (macro)
Best Face, Panorama, HDR
Video 1080p@30fps 8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS 4K@30fps, 1080p@30/60fps, gyro-EIS
Front Camera 32 MP, f/2.2, (wide), 1/2.8", 0.8µm, PDAF
8 MP, f/2.4, (ultrawide)
HDR
1080p@30fps [Similar]
40 MP, f/2.2, 26mm (wide), 0.7µm, PDAF
Dual video call, Auto-HDR
4K@30/60fps, 1080p@30fps [Similar]
12 MP, f/2.2, (wide)

4K@30fps, 1080p@30/60fps, 10-bit HDR [Similar]

connectivity Connectivity and Data Rate

GPRS Yes Yes Yes
Edge Yes Yes Yes
3G HSPA 42.2/5.76 Mbps, LTE-A, 5G (1.9 Gbps DL) HSPA 42.2/5.76 Mbps, LTE-A (CA), 5G HSPA, LTE, 5G
Bluetooth 5.0, A2DP, LE 5.2, A2DP, LE 5.3, A2DP, LE
Wi-Fi Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot Wi-Fi 802.11 a/b/g/n/ac/6e, dual-band, Wi-Fi Direct, hotspot Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct
USB 2.0, Type-C 1.0 reversible connector USB Type-C 3.2, USB On-The-Go USB Type-C 2.0, OTG
GPS Yes, with dual-band A-GPS, GLONASS, BDS, GALILEO Yes, with A-GPS, GLONASS, BDS, GALILEO GPS, GALILEO, GLONASS, BDS, QZSS
Browser Yes Yes Yes

memory User Memory

Internal 256 GB, 12 GB RAM or 128 GB, 8 GB RAM UFS 3.0 512 GB, 16 GB RAM or 256 GB, 12 GB RAM or 128 GB, 12 GB RAM UFS 3.1 256 GB, 12 GB RAM or 256 GB, 8 GB RAM or 128 GB, 8 GB RAM UFS 3.1
Expandable Storage No microSDXC (uses shared SIM slot) No
USB OTG Supported Supported Supported

Apps Sensors

Fingerprint fingerprint supported fingerprint supported fingerprint supported
Proximity Sensor proximity sensor present proximity sensor present proximity sensor not present
Accelerometer Sensor accelerometer sensor present accelerometer sensor present accelerometer sensor present
Magnetic-Field Sensor (Compass) magnetic field sensor present magnetic field sensor present magnetic field sensor present
Gyroscope Sensor gyroscope sensor present gyroscope sensor present gyroscope sensor present
Barometer Sensor barometer sensor not present barometer sensor present barometer sensor not present
NFC NFC not supported NFC supported NFC not supported

battery Battery

Type Non-removable Li-Po Battery
Fast battery charging 30W
Non-removable Li-Po Battery
Fast battery charging 25W
USB Power Delivery 3.0
Fast Qi/PMA wireless charging 15W
Reverse wireless charging 4.5W
Non-removable Li-ion Battery
Fast Battery Charging 45W wired, 65% in 30 min, 100% in 68 min
Capacity 4200 mAh 5000 mAh 5000 mAh
Stand by - - -
Talk Time - - -