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Realme C21Y
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Apple iPhone 17 Air
Feature Comparison
Initial data or main information
Initial data or main information
| Price Range at Time of Release | € 754.99 / $ 740.71 / £ 640.00 | |
|---|---|---|
| Introduction Time | June 21, 2021 | - |
| Availability Status | Released | Available. Released 2025, September 19 |
| Official Release Date | July 2, 2021 | - |
| Operating System Type at Release | Android | - |
| Operating System at Release | Android 10 | - |
| Part Numbers | - | iPhone18,3, A3520, A3258, A3519, A3521 |
Aesthetic features
Aesthetic features
| Size and Dimensions | 164.5 x 76 x 9.1 mm | 156.2 x 74.7 x 5.6 mm |
|---|---|---|
| Product Weight | 200 gram (g) | 165 gram (g) |
| Color Options | - | Space Black, Cloud White, Light Gold, Sky Blue |
| Dimensions | - | 149.6 x 71.5 x 8 mm (5.89 x 2.81 x 0.31 in) |
Style and design
Style and design
| Front Panel Material | Glass | Glass (Ceramic Shield 2) |
|---|---|---|
| Frame material type | Metal - 7000 Series Aluminum | Titanium (Titanium grade 5) |
| Back body material | - | Glass (Ceramic Shield) |
Display
Display
| Screen Size | 6.5 inch | 6.5 inch |
|---|---|---|
| Display Panel Type | LTPO Super Retina XDR OLED | |
| Display Resolution | 1260 x 2736 pixels | |
| Pixel Density Range | ~460 ppi | |
| Screen-to-Body Ratio | ~81.6 percent (%) | 89.9 percent |
| Screen Aspect Ratio | 20:9 | 19.5:9 |
| Maximum Brightness Level | 400 nit | 3000 nits (Peak) |
| Highest Refresh Rate | - | 120 hertz (hz) |
| Display Technical Details | - | HDR10, Dolby Vision, 1000 nits (typ), 1600 nits (HBM) |
| Brightness | - | LTPO Super Retina XDR OLED, 120Hz, HDR10, Dolby Vision, 1000 nits (typ), 1600 nits (HBM), 3000 nits (peak) |
Storage memory
Storage memory
| Internal Memory Capacity | 256GB, 512GB, 1TB | |
|---|---|---|
| Internal Storage Type | - | NVMe |
| RAM Memory | - | 12 GB |
Connections
Connections
| Memory Card Slot | Yes | - |
|---|---|---|
| Bluetooth Support | 6.0, A2DP, LE |
Main memory and RAM
Main memory and RAM
| Memory Card Slot Type | microSDXC (dedicated slot) | - |
|---|
Main camera
Main camera
| Main Camera Type - Wide/Standard | 13 megapixel (mp) | 48 megapixel (mp) |
|---|---|---|
| Macro Camera Type | 2 megapixel (mp) | - |
| Depth Sensor Camera | 2 megapixel (mp) | - |
| Maximum Video Recording Quality of Rear Camera | 4K | |
| Filming Details | - | 4K@24/25/30/60fps, 1080p@25/30/60/120/240fps, HDR, Dolby Vision HDR |
| Rear Camera Details | - | Single |
| Main Camera Specifications - Wide/Standard | - | 48 MP, f/1.6, 26mm (wide), 1/1.56", 1.0µm, dual pixel PDAF, sensor-shift OIS |
| Video Quality: Resolution and Frame Rate | - | 4K@60fps |
Front camera
Front camera
| Main Selfie Camera Quality | 5 megapixel (mp) | 18 Megapixels |
|---|---|---|
| Maximum Video Recording Resolution of Selfie Camera | 4K | |
| Resolution and Frame Rate of Selfie Video | - | 4K@24/25/30/60fps, 1080p@25/30/60/120fps, gyro-EIS |
| Main Selfie Camera Specifications | - | 18 MP multi-aspect, f/1.9, 20mm (ultrawide), PDAF |
| Selfie Camera Video Recording Details | - | HDR, Dolby Vision HDR, 3D (spatial) audio, stereo sound rec. |
| Depth Sensor and Identity Recognition Camera | - | SL 3D, (depth/biometrics sensor) |
| Second Selfie Camera Lens | - | No |
Power supply and battery life
Power supply and battery life
| Battery Capacity | 5000mAh | 3149 mAh |
|---|---|---|
| Battery Technology | Lithium Polymer | Lithium-Ion (Li-Ion) |
Battery and charging features
Battery and charging features
| Battery Replaceability | Non-user replaceable | No |
|---|---|---|
| Wireless Charging Support | No | Yes (20W MagSafe / Qi2) |
| Connection Port Type | USB Type-C 2.0 | |
| OTG Support | Yes | Yes |
| Maximum Supported Charging Power | - | Wired, PD2.0 |
| Full Charge Time | - | 50 percent in 30 minutes |
| Maximum Wireless Charging Power | - | 20W |
| Other battery and charging features | - | 4.5W reverse charging (Reverse wired) |
Audio features
Audio features
| Speaker Type | Mono | Yes |
|---|---|---|
| Number of 3.5mm Jacks | Yes | No |
Communications and sensors
Communications and sensors
| Fingerprint Sensor Type | On the back of the phone | No (Face ID) |
|---|---|---|
| Wi-Fi Specifications | Wi-Fi 802.11 a/b/g/n/ac/6e/7, tri-band, hotspot | |
| Communication Technologies | GSM / CDMA / HSPA / EVDO / LTE / 5G | |
| 5G Support | No | Yes |
| Navigation Type and GPS | GPS, GALILEO, GLONASS, QZSS, BDS, NavIC | |
| Bluetooth Details and Description | - | A2DP, LE |
Processor or chip
Processor or chip
| Chipset Model | - | Apple A19 Pro |
|---|---|---|
| Chip Manufacturing Process | - | 3 Nm |
| Number of Processor Cores | - | 6-core (Hexa-core) |
| Processor Core Details | - | 2x4.26 GHz + 4xX.X GHz |
| Other Technical Details of Chipset | - | Ultra Wideband (UWB) support (gen2 chip) |
Launch Information
Launch Information
| Announced | - | 2025, September 09 |
|---|
Body
Body
| Build | - | Glass front (Ceramic Shield 2), aluminum frame, glass back |
|---|---|---|
| Water Resistance | - | IP68 dust tight and water resistant (immersible up to 6m for 30 min) |
Design
Design
| SIM | - | · Nano-SIM + eSIM + eSIM (max 2 at a time; International) eSIM + eSIM (8 or more, max 2 at a time; USA) Nano-SIM + Nano-SIM (China) |
|---|
Visual details
Visual details
| Supported HDR Standards | - | Anti-reflective coating |
|---|
Platform
Platform
| Operating System | - | iOS 26, upgradable to iOS 26.5 |
|---|---|---|
| Chipset | - | Apple A19 (3 nm) |
Central Processor (CPU)
Central Processor (CPU)
| CPU | - | Hexa-core (2x4.26 GHz + 4x2.60 GHz) |
|---|---|---|
| GPU Model | - | Apple GPU (5-core graphics) |
Capabilities
Capabilities
| Smart Sensors | - | Face ID, accelerometer, gyro, proximity, compass, barometer |
|---|
Technical features
Technical features
| Fast Charging Capability | - | Wired, PD3.2, AVS, 50% in 20 min |
|---|
Power
Power
| Energy efficiency class | - | Class A |
|---|
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User Rating Comparison
Realme C21Y
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/10
from total 1 Vote
Apple iPhone 17 Air
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/10
from total 1 Vote
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