Realme 15T vs Vivo X21 comparison

Compare Realme 15T
Compare Vivo X21
ratings
Overall NDTV RatingRead ReviewRead Review
Design Rating
Display Rating
Software Rating
Performance Rating
Battery Life Rating
Camera Rating
Value for Money Rating
key specs
Display6.57-inch6.28-inch
ProcessorMediaTek Dimensity 6400 MaxQualcomm Snapdragon 660
Front Camera50-megapixel 12-megapixel
Rear Camera50-megapixel + 2-megapixel 12-megapixel + 5-megapixel
RAM8GB, 12GB6GB
Storage128GB, 256GB128GB
Battery Capacity7000mAh3200mAh
OSAndroid 15Android 8.1
Resolution1080x2372 pixels1080x2280 pixels
general
BrandRealmeVivo
Model15TX21
Release dateSeptember 2, 2025March 1, 2018
AI EnabledYes-
Launched in IndiaYesYes
Form factorTouchscreenTouchscreen
Thickness7.79-
Weight (g)181.00156.20
IP ratingIP69-
Battery capacity (mAh)70003200
Removable batteryNoNo
Fast chargingSuper VOOCProprietary
ColoursFlowing Silver, Silk Blue, Suit TitaniumBlack, Gold
Dimensions (mm)-154.50 x 74.80 x 7.40
display
Refresh Rate120 Hz-
Resolution StandardFHD+-
Screen size (inches)6.576.28
TouchscreenYesYes
Resolution1080x2372 pixels1080x2280 pixels
Aspect ratio-19:9
hardware
Processorocta-core2.2GHz octa-core
Processor makeMediaTek Dimensity 6400 MaxQualcomm Snapdragon 660
RAM8GB, 12GB6GB
Internal storage128GB, 256GB128GB
Expandable storageYesYes
Expandable storage typemicroSDmicroSD
Expandable storage up to (GB)2000256
Dedicated microSD slotNo-
camera
Rear camera50-megapixel (f/1.8) + 2-megapixel (f/2.4)12-megapixel (f/1.8, 1.4-micron) + 5-megapixel (f/2.4)
No. of Rear Cameras2-
Rear flashYesLED
Front camera50-megapixel (f/2.4)12-megapixel (f/2.0)
No. of Front Cameras1-
Rear autofocus-Phase detection autofocus
software
Operating systemAndroid 15Android 8.1
SkinRealme UI 6FunTouch 4.0
connectivity
Wi-FiYesYes
GPSYesYes
BluetoothYes, v 5.30Yes, v 5.00
InfraredYesNo
USB OTGYesYes
USB Type-CYes-
HeadphonesType-C3.5mm
Number of SIMs22
Active 4G on both SIM cardsYes-
Wi-Fi standards supported-802.11 a/b/g/n/ac
NFC-No
Micro-USB-Yes
FM-No
sim 1
SIM TypeNano-SIMNano-SIM
GSM/CDMA-GSM
3G-Yes
4G/ LTE-Yes
sim 2
SIM TypeNano-SIMNano-SIM
GSM/CDMA-GSM
3G-Yes
4G/ LTE-Yes
sensors
In-Display Fingerprint SensorYes-
Compass/ MagnetometerYesYes
Proximity sensorYesYes
AccelerometerYesYes
Ambient light sensorYesYes
GyroscopeYesYes
Fingerprint sensor-Yes

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