Findprix helps you compare the Realme Narzo 100x and Vivo Y21 5G (8GB RAM + 128GB) in terms of price, specifications, user reviews, and more. Realme Narzo 100x is expected to launch in India on July 22, 2026, with a starting price of ₹20,999 Vivo Y21 5G (8GB RAM + 128GB) is priced at ₹22,999. Here's a quick comparison.
| Product | Price | Processor | RAM | Storage | Display | Front Camera | Rear Camera | Battery | OS |
|---|---|---|---|---|---|---|---|---|---|
| Realme Narzo 100x | ₹20,999 | MediaTek Dimensity 6300 | 6 nm | 4GB | LPDDR4X | 128GB | UFS 2.2 | 6.81 inches | HD+ | 8MP | 50MP | 8000 mAh | 45W | Android 16 | Realme UI 7.0 |
| Vivo Y21 5G | ₹22,999 | MediaTek Dimensity 6300 | 6 nm | 8GB | LPDDR4X | 128GB | UFS 2.2 | 6.74 inches | HD+ | 5MP | 50MP + 0.08MP | 6500 mAh | 44W | Android 16 | OriginOS 6 |
₹20,999
Realme Narzo 100x
4GB RAM + 128GB
Upcoming 
₹22,999
Vivo Y21 5G
8GB RAM + 128GB
Prices
Realme Narzo 100x
Prices not available
Vivo Y21 5G
Amazon₹22,999Price has been stable for the last 1 month.
Ratings
Realme Narzo 100x
Ratings not available
Vivo Y21 5G
3.4
(9)
General
| Feature | Realme Narzo 100x | Vivo Y21 5G |
|---|---|---|
| Device Type | Smartphone | Smartphone |
| Operating System | Android 16 | Android 16 |
| Custom UI | Realme UI 7.0 | OriginOS 6 |
Design
| Feature | Realme Narzo 100x | Vivo Y21 5G |
|---|---|---|
| Dimensions | 166.4 x 78.2 x 8.8 mm | 167.4 x 77.1 x 8.39 mm |
| Weight | 224 g | 209 g |
| Water Resistance | Yes, IP65 | Yes, IP65 |
| Dust Resistance | Yes | Yes |
| Build Material | Back: Plastic | Back: Plastic |
| Durability | MIL-STD-810H compliant, Drop resistant up to 1.8m | MIL-STD-810H compliant |
| Colours | Midnight Black, Flash Orange | Champagne Gold, Midnight Blue |
| Features | Back: RGB Notifications Light | -- |
Display
| Feature | Realme Narzo 100x | Vivo Y21 5G |
|---|---|---|
| Touch Screen | Yes | Yes |
| Touch Sampling Rate | 180 Hz | -- |
| Display Type | LCD | LCD |
| Brightness | Typical: 975 nits HBM: 1200 nits | HBM: 1200 nits |
| Refresh Rate | 144 Hz | 120 Hz |
| Screen Size | 6.81 inches (17.3 cm), HD+ | 6.74 inches (17.12 cm), HD+ |
| Screen Resolution | 720 x 1570 pixels | 1600 x 720 pixels) |
| Aspect Ratio | 19.5:9 | 20:9 |
| Screen-to-Body Ratio | ~87.1% | ~85.0% |
| Pixel Density | ~254 ppi | ~260 ppi |
| Screen Protection | Yes, Panda-1681 | -- |
Rear Camera
| Feature | Realme Narzo 100x | Vivo Y21 5G |
|---|---|---|
| Camera Setup | Single | Dual |
| Primary | 50 MP (wide) 75° FoV, 5P lens, f/1.8 aperture upto 10x digital zoom AF | 50 MP (wide) f/1.8 aperture |
| Secondary | -- | 0.08 MP f/3.0 aperture |
| OIS | No | -- |
| Autofocus | Yes | Yes |
| Flash | Yes, LED | Yes |
| Video Recording | Standard: 1080p @ 30 fps, 720p @ 30 fps Slow Motion: 720p @ 120 fps Time-lapse: 1080p @ 30 fps | 1080p @ 30 fps |
Front Camera
| Feature | Realme Narzo 100x | Vivo Y21 5G |
|---|---|---|
| Camera Setup | Single | Single |
| Primary | 8 MP (ultra-wide) 80° FoV, 4P lens, f/2.0 aperture | 5 MP f/2.2 aperture |
| Video Recording | Standard: 1080p @ 30 fps, 720p @ 30 fps Time-lapse: 1080p @ 30 fps | -- |
Performance
| Feature | Realme Narzo 100x | Vivo Y21 5G |
|---|---|---|
| RAM | 4 GB | 8 GB |
| RAM Type | LPDDR4X | LPDDR4X |
| Chipset | MediaTek Dimensity 6300 | MediaTek Dimensity 6300 |
| Fabrication | 6 nm | 6 nm |
| GPU | Mali-G57 MC2 | Mali-G57 MC2 |
| CPU | Octa core 2x Cortex-A76 @ 2.4 GHz 6x Cortex-A55 @ 2.0 GHz | Octa core 2x Cortex A76 @ 2.4 GHz 6x Cortex A55 @ 2 GHz |
| Cooling System | Yes | -- |
| Cooling Area | 5300 mm² | -- |
Storage
| Feature | Realme Narzo 100x | Vivo Y21 5G |
|---|---|---|
| Internal Storage | 128 GB | 128 GB |
| Storage Type | UFS 2.2 | UFS 2.2 |
| Memory Card Slot | Yes, up to 2 TB | Yes, up to 2 TB |
Battery
| Feature | Realme Narzo 100x | Vivo Y21 5G |
|---|---|---|
| Battery | 8000 mAh | 6500 mAh |
| Battery Type | Si/C Li-Ion | Li-ion |
| Wired Charging Speed | 45W | 44W |
| Wired Charging Time | -- | 50% charge in ~36 minutes |
| Wired Reverse Charging | Yes | Yes |
| Bypass Charging | Yes | -- |
Network
| Feature | Realme Narzo 100x | Vivo Y21 5G |
|---|---|---|
| SIM | SIM 1: Nano SIM 2: Nano (Hybrid slot) | SIM 1: Nano SIM 2: Nano (Hybrid slot) |
| Network Support | 5G, 4G, 3G, 2G | 5G, 4G, 3G, 2G |
| 5G Bands | n1, n3, n5, n8, n28B, n40, n41, n77, n78 | n1, n3, n5, n8, n28B, n38, n40, n41, n77, n78 |
| 4G Bands | B1, B3, B5, B8, B28B, B40, B41 | B1, B3, B5, B8, B28B, B38, B40, B41 |
| Navigation Support | GPS, Glonass, Beidou, Galileo, QZSS | GPS, Glonass, Beidou, Galileo, QZSS |
| SAR | -- | Head: 1.14 W/kg Body: 1.12 W/kg |
Connectivity
| Feature | Realme Narzo 100x | Vivo Y21 5G |
|---|---|---|
| Bluetooth | Yes, v5.3 | Yes, v5.4 |
| Wi-Fi | Yes, Wi-Fi 5 (802.11 a/b/g/n/ac) | Yes, Wi-Fi 5 (802.11 a/b/g/n/ac), Dual Band (2 GHz + 5GHz) |
| USB | USB Type-C 2.0, OTG | USB Type-C 2.0, OTG |
| NFC | -- | No |
Features
| Feature | Realme Narzo 100x | Vivo Y21 5G |
|---|---|---|
| Audio Jack | Yes, USB Type-C | Yes, 3.5 mm |
| FM Radio | -- | Yes |
| Loud Speaker | Yes | Yes |
| Stereo Speakers | -- | Yes |
| Fingerprint Sensor | Yes, Side | Yes, Side |
| Sensors | Accelerometer, Compass, Proximity Sensor | Accelerometer, Compass, Light Sensor, Proximity Sensor |
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