OPPO A16K vs Realme C21 (4GB RAM + 64GB)
Here you can compare OPPO A16K and Realme C21 (4GB RAM + 64GB). Comparing OPPO A16K vs Realme C21 (4GB RAM + 64GB) on Smartprix enables you to check their respective specs scores and unique features. It would potentially help you understand how OPPO A16K stands against Realme C21 (4GB RAM + 64GB) and which one should you buy The current lowest price found for OPPO A16K is ₹7,999 and for Realme C21 (4GB RAM + 64GB) is ₹9,999. The details of both of these products were last updated on Aug 18, 2026.
| Specification | OPPO A16K | Realme C21 (4GB RAM + 64GB) |
|---|---|---|
| Internal Memory | 32 GB | 64 GB |
| Battery | 4230 mAh, Li-Po Battery | 5000 mAh, Li-Po Battery |
| OS | Android v11 | Android v10, upgradable to v11 |
| CPU | 2.3 GHz, Octa Core Processor | 2.3 GHz, Octa Core Processor |
| Display | 6.52 inches, 720 x 1600 pixels, 60 Hz | 6.5 inches, 1600 x 720 pixels, 60 Hz |
| Price | ₹7,999 | ₹9,999 |
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Overview
| Specs Score | 37 / 100 | 39 / 100 Better Specs |
| RAM | 3 GB | 4 GB More RAM |
| Storage | 32 GB | 64 GB More Storage |
| Weight | 175 g Lighter | 190 g |
| Thickness | 7.85 mm Slimmer | 8.9 mm |
| Battery | 4230 mAh | 5000 mAh Bigger Battery |
| Unique Features | No FM Radio No | Fingerprint Sensor No Reverse Charging |
General
| Model | A11K | RMX3201, C21 |
| Sim Type | Dual Sim, GSM+GSM | Dual Sim, GSM+GSM |
| Dual Sim | Yes | Yes |
| Sim Size | Nano+Nano SIM | Nano+Nano SIM |
| Device Type | Smartphone | Smartphone |
| Release Date | November 06, 2021 | April 8, 2021 |
Design
| Dimensions | 75.4 x 164 x 7.85 mm | 76.4 x 165.2 x 8.9 mm |
| Weight | 175 g | 190 g |
Display
| Type | Color IPS LCD Screen (16M Colors) | Color IPS LCD Screen (16.7M) |
| Touch | Yes | Yes, 120 Hz Touch Sampling Rate |
| Size | 6.52 inches, 720 x 1600 pixels, 60 Hz | 6.5 inches, 1600 x 720 pixels, 60 Hz |
| Aspect Ratio | 20:9 | 20:09 |
| PPI | ~ 269 PPI | ~ 269 PPI |
| Screen to Body Ratio | ~ 88.7% | ~ 89.5% |
| Features | 120 Hz Touch , Sunlight Screen Support, COG Sealing Process, WideVine L3 | |
| Notch | Yes, Water Drop Notch | Yes, Water Drop Notch |
Memory
| RAM | 3 GB | 4 GB |
| Storage | 32 GB | 64 GB |
| Card Slot | Yes, upto 256 GB | Yes, upto 256 GB |
Connectivity
| GPRS | Yes | Yes |
| EDGE | Yes | Yes |
| 3G | Yes | Yes |
| 4G | Yes | Yes |
| VoLTE | Yes | Yes |
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot |
| Bluetooth | Yes, v5.0 | Yes, v5.0 |
| USB | Yes, microUSB v2.0 | Yes, microUSB |
| USB Features | USB on-the-go, USB Charging | USB on-the-go, USB Charging |
Extra
| GPS | Yes, with A-GPS, GLONASS, BDS | Yes |
| Fingerprint Sensor | No | Yes, Rear |
| Face Unlock | Yes | Yes |
| Sensors | Accelerometer, Gyro, Proximity, Compass | Magnetic Induction Sensor, Light Sensor, Proximity Sensor, Acceleration Sensor |
| 3.5mm Headphone Jack | Yes | Yes |
| Extra Features | Night Shield, Step Tracker, Game Space, APP Market, Theme Store, Clone Phone, Phone Manager, Telephone Number Identification, TUV Rheinland Certified |
Camera
| Rear Camera | 13 MP ƒ/2.2 | 13 MP ƒ/2.2 (Main) 2 MP ƒ/2.4 (Macro) Macro 2 MP ƒ/2.4 Mono |
| Camera Sensor | CMOS Sensor | |
| Auto Focus | Yes | Yes |
| Features | AI Beautification, Bokeh, HDR, Ddazzle Color Mode | Supports 20 Continuous Shooting, Photograph Functions: Night Mode, Panoramic View, Expert, Timelapse, Portrait Mode, HDR, Ultra Macro, AI Beauty, Filter, Chroma Boost, Video Recording Functions: Filter, Slow Motion, HDR |
| Video Recording | 1080p @ 30 fps FHD | 720p, 720P |
| Flash | Yes, LED | Yes, LED |
| Front Camera | 5 MP | 5 MP |
| Front Video Recording | 1080p @ 30 fps FHD | 720p |
Technical
| OS | Android v11 | Android v10, upgradable to v11 |
| Chipset | MediaTek Helio G35 | MediaTek Helio G35 |
| CPU | 2.3 GHz, Octa Core Processor | 2.3 GHz, Octa Core Processor |
| Core Details | 4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53 | Arm Cortex-A53 |
| GPU | PowerVR GE8320 | IMG GE8320 |
| Java | No | No |
| Browser | Yes | Yes |
Multimedia
| Yes | Yes | |
| Music | Yes | AAC, HE-AAC v1, HE-AAC v2, AMR, AWB, MIDI, MP3, OGG VORBIS |
| Video | Yes | MP4, 3GP, 3G2, 3GPP, 3GPP2, M4V, MKV |
| FM Radio | Yes | No |
Battery
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 4230 mAh, Li-Po Battery | 5000 mAh, Li-Po Battery |
| Reverse Charging | Yes |
Discuss
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