Product
Vivo X21 UD
Vivo X21 UD
₹56,038
Samsung Galaxy S24 FE
Samsung Galaxy S24 FE
₹59,999
Battery
Charging 18W wired 25W wired, PD, QC2, 50% in 30 min15W wirelessReverse wireless
Type Li-Ion 3200 mAh, non-removable 4700 mAh
Body
Build Glass front (Gorilla Glass 3), aluminum back, aluminum frame Glass front (Gorilla Glass Victus+), glass back (Gorilla Glass Victus+), aluminum frame
Dimensions 154.5 x 74.8 x 7.4 mm (6.08 x 2.94 x 0.29 in) 162 x 77.3 x 8 mm (6.38 x 3.04 x 0.31 in)
SIM Nano-SIM + Nano-SIM Nano-SIMNano-SIM + Nano-SIMNano-SIM + eSIMeSIM + eSIM
Weight 156.2 g (5.50 oz) 213 g (7.51 oz)
  - IP68 dust tight and water resistant (immersible up to 1.5m for 30 min)
Comms
Bluetooth 5.0, A2DP, LE 5.3, A2DP, LE
NFC No Yes
Positioning GPS, GLONASS GPS, GLONASS, GALILEO, BDS
Radio FM radio Unspecified
USB microUSB 2.0, OTG USB Type-C 3.2, OTG
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct Wi-Fi 802.11 a/b/g/n/ac/6e, dual-band or tri-band (market/region dependent), Wi-Fi Direct
Display
Protection Corning Gorilla Glass 3 Corning Gorilla Glass Victus+
Resolution 1080 x 2280 pixels, 19:9 ratio (~402 ppi density) 1080 x 2340 pixels, 19.5:9 ratio (~385 ppi density)
Size 6.28 inches, 98.4 cm2 (~85.2% screen-to-body ratio) 6.7 inches, 110.2 cm2 (~88.0% screen-to-body ratio)
Type Super AMOLED Dynamic AMOLED 2X, 120Hz, HDR10+, 1900 nits (peak)
Features
Sensors Fingerprint (under display, optical), accelerometer, proximity, compass Fingerprint (under display, optical), accelerometer, gyro, compass
  - Virtual proximity sensingSamsung DeXCircle to Search
Launch
Announced 2018, March. Released 2018, March 2024, September 26
Status Discontinued Available. Released 2024, October 03
Main Camera
Dual 12 MP, f/1.8, 1/2.55", 1.4µm, dual pixel PDAF 5 MP, f/2.4, (depth) -
Features LED flash, HDR, panorama LED flash, HDR, panorama
Triple - 50 MP, f/1.8, 24mm (wide), 1/1.57", 1.0µm, dual pixel PDAF, OIS8 MP, f/2.4, 75mm (telephoto), 1/4.4", 1.0µm, PDAF, OIS, 3x optical zoom12 MP, f/2.2, 13mm, 123˚ (ultrawide), 1/3.0", 1.12µm
Video 1080p@30fps 8K@30fps, 4K@30/60/120fps, 1080p@30/60/120/240fps
Memory
Card slot microSDXC (uses shared SIM slot) No
Internal 128GB 6GB RAM 128GB 8GB RAM, 256GB 8GB RAM, 512GB 8GB RAM
  eMMC 5.1 -
Misc
Colors Black, Ruby Red Blue, Graphite, Gray, Mint, Yellow
Models X21UD A SM-S721B, SM-S721B/DS, SM-S721U1, SM-S721U, SM-S721W, SM-S7210, SM-S721N
SAR - 0.94 W/kg (head)     0.71 W/kg (body)    
SAR EU - 0.86 W/kg (head)     1.29 W/kg (body)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands 1, 2, 3, 5, 8, 34, 38, 39, 40, 41 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 25, 26, 28, 32, 38, 40, 41, 66 - International
5G bands - 1, 2, 3, 5, 7, 8, 12, 20, 25, 26, 28, 38, 40, 41, 66, 75, 77, 78 SA/NSA/Sub6 - International
Speed HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps HSPA, LTE (CA), 5G
Technology GSM / CDMA / HSPA / LTE GSM / HSPA / LTE / 5G
  CDMA 800 & TD-SCDMA -
Platform
Chipset Qualcomm SDM660 Snapdragon 660 (14 nm) Exynos 2400e (4 nm)
CPU Octa-core (4x2.2 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver) 10-core (1x3.1 GHz + 2x2.9 GHz + 3x2.6 GHz + 4x1.95 GHz)
GPU Adreno 512 Xclipse 940
OS Android 8.1 (Oreo), Funtouch 4 Android 14, up to 7 major Android upgrades, One UI 6.1
Selfie camera
Single 12 MP, f/2.0, (wide), 1/2.8", 1.28µm 10 MP, f/2.4, 26mm (wide), 1/3.0", 1.22µm
Video 1080p@30fps 4K@30/60fps, 1080p@30/60fps; gyro-EIS
Sound
3.5mm jack Yes No
Loudspeaker Yes Yes, with stereo speakers
  32-bit/192kHz Hi-Res audio -
Tests
Battery (new) - Active use score 11:48h
Display - 1372 nits max brightness (measured)
Loudspeaker - -24.6 LUFS (Very good)
Performance - AnTuTu: 1548896 (v10)GeekBench: 6299 (v6)3DMark: 3889 (Wild Life Extreme)
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