This is a side-by-side smartphone specs comparison of the Xiaomi Redmi S2 and vivo Y21d.
The Xiaomi Redmi S2 has a 5.99-inch display, Qualcomm Snapdragon 625 processor, cameras, 4G LTE connectivity, and 3080mAh battery.
Meanwhile, the vivo Y21d has a 6.68-inch display, UNISOC T7225 (12 nm) processor, dual cameras, 4G LTE connectivity, and 6500mAh battery.
| Specs | Xiaomi Redmi S2 | vivo Y21d |
|---|---|---|
| Picture |
★★★★★ 3.7/5 stars (31 ratings)
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★★★★★ 3.6/5 stars (13 ratings)
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| Screen | 5.99-inch HD+ IPS LCD Display (720 x 1440 Pixels, 269 ppi) with 18:9 Aspect Ratio, 2.5D Arc Glass & Rounded Corners | 6.68-inch HD+ IPS LCD Display (720 x 1608 Pixels, 264 ppi) with Guardian Glass, 90Hz Refresh Rate, 1000nits HBM, and punch-hole |
| OS | Android 8.1 Oreo with MIUI 9 | Android 15 with Funtouch OS 15 |
| Chipset | Qualcomm Snapdragon 625 | UNISOC T7225 (12 nm) |
| CPU | Octa Core CPU 8x Cortex-A53 @ 2.0GHz |
Octa Core CPU 2x Cortex-A75 @ 1.8GHz & 6x Cortex-A55 @ 1.8GHz |
| GPU | Adreno 506 | Mali-G52 MP1 |
| RAM | 3 GB | 4GB or 6GB of RAM |
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| Rear Camera | Dual Camera: 12 + 5 Megapixels (f/2.2 Aperture + f/2.0 Aperture) Autofocus Dual LED Flash |
Dual Cameras: 50MP Main Camera (f/1.8 aperture, Autofocus) VGA auxiliary camera -Dual LED Flash -Up to 1080p@30fps video recording |
| Front Camera |
16 Megapixels with Fixed Focus and Soft LED Flash - A.I. Beautification |
5 Megapixels (f/2.2 aperture) - Up to 1080p@30fps video recording |
| Storage | 32GB | 128GB or 256GB (eMMC 5.1) |
| Expansion | 256GB via microSD | 2TB via microSD |
| SIM | Dual SIM (Nano-SIM) | Dual SIM (Nano-SIM) |
| Networks | 4G LTE, 3G HSPA+, 2G EDGE & GPRS Networks | 4G LTE, 3G HSPA+, 2G EDGE & GPRS Networks |
| Wi-Fi | Wi-Fi 802.11 b/g/n | Wi-Fi 802.11 b/g/n/ac (dual band) |
| NFC | No | No |
| Bluetooth | Bluetooth 5.0 | Bluetooth 5.2 |
| Infrared | Yes | No |
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| Position | A-GPS | GPS, GLONASS, GALILEO, BeiDou, QZSS |
| USB OTG | Yes | Yes |
| USB | MicroUSB 2.0 | USB Type-C |
| 3.5mm Audio Jack | Yes | No |
| Audio Enhancement | None | Dual Speakers, Up to 400% volume |
| FM Radio | Yes | Yes |
| Sensors |
Fingerprint Sensor Proximity Sensor & Ambient Light Sensor Compass, Gyroscope & Accelerometer |
Face Recognition & Fingerprint Sensor Proximity Sensor & Ambient Light Sensor Compass & Accelerometer Ring notification LED (Dynamic Light) |
| Battery | 3080 mAh Li-Po Battery (Non-removable) 10W (5V/2A) Fast Charging |
6500 mAh (Non-removable) 44W Fast Charging (50% in 38 minutes) |
| Material | Polycarbonate | Glass front, Plastic composite back (IP68/IP69 dust & water resistance, SGS 5-star Drop Resistance, MIL-STD-810H Shock Resistance) |
| Size | 160.73 x 77.26 x 8.1 mm | 166.14 x 77.01 x 8.39 mm |
| Weight | 170 g | 209 g |
| Colors | Gold and Gray | Glowing Black, Coral Red, Lavender Purple |
| Release Date | May 19, 2018 | September 28, 2025 |
| Price | ₱7,990.00 - Official Price in the Philippines | ₱6,999.00 - Official price of 4GB+128GB version in the Philippines ₱8,999.00 - Official price of 6GB+256GB version in the Philippines |
| Buy Online |
Xiaomi Redmi S2 on Lazada Xiaomi Redmi S2 on Shopee |
vivo Y21d on Lazada vivo Y21d on Shopee |