Realme C21 (4GB RAM + 64GB) vs Xiaomi Redmi 15 5G
Quick Comparison
Xiaomi Redmi 15 5G has better RAM than Realme C21 (4GB RAM + 64GB). In terms of display resolution, Xiaomi Redmi 15 5G has better resolution of 2340 x 1080 than Realme C21 (4GB RAM + 64GB) which has resolution of 720 x 1600. Xiaomi Redmi 15 5G has more internal memory than Realme C21 (4GB RAM + 64GB)
| Name | Realme C21 (4GB RAM + 64GB) | Xiaomi Redmi 15 5G |
| RAM | 4 GB | 6 GB |
|---|---|---|
| Display | 6.5 in | 6.9 in |
| Internal Memory | 64 GB | 128 GB |
| Battery | 5000 mAh | 7000 mAh |
| Camera | 13 MP + 2 MP + 2 MP Triple | 50 MP Dual |
| Price | Rs. 9999 | Rs. 16999 |
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Detailed Comparison
Price And Launch
The launch Date of the first phone is April 8, 2021. The cost of Realme C21 (4GB RAM + 64GB) is Rs. 9999. The launch Date of the second phone is August 01, 2025. The cost of Xiaomi Redmi 15 5G is Rs. 16999.
Display comparison
Xiaomi Redmi 15 5G has larger screen size of 6.9 inches in comparison to Realme C21 (4GB RAM + 64GB)'s 6.5 inch screen. Realme C21 (4GB RAM + 64GB) has IPS LCD Screen type where as Xiaomi Redmi 15 5G has IPS Screen type. Xiaomi's phone has display density of 374 PPI & Realme's phone has only 269 PPI display density. In terms of screen to body ratio, Realme's phone has better screen to body ratio of ~ 89.5% than Xiaomi's phone ~ 83.2%. Realme C21 (4GB RAM + 64GB) has 20:09 aspect ratio where as Xiaomi Redmi 15 5G has 20.6:9 aspect ratio.
Memory comparison
Xiaomi Redmi 15 5G's larger 6 GB RAM is better for playing games and all with respect to Realme C21 (4GB RAM + 64GB)'s lower 4 GB RAM. Xiaomi Redmi 15 5G has more Internal Memory (128 GB) than Realme C21 (4GB RAM + 64GB) (64 GB).
Camera comparison
Xiaomi Redmi 15 5G's 50 MP Dual Rear Camera outshines Realme C21 (4GB RAM + 64GB)'s 13 MP + 2 MP + 2 MP Triple Rear Camera in terms of resolution. Xiaomi Redmi 15 5G will be better choice if you're looking to click lot of selfies as it has better 8 MP Front Camera in comparison to Realme C21 (4GB RAM + 64GB)'s 5 MP Front Camera.
Technical comparison
Both the phones has Android Operating System but the first one runs on version 10 and the second one on 15 version.
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Full Comparison
| Name | Realme C21 (4GB RAM + 64GB) | Xiaomi Redmi 15 5G |
| General | ||
| Country of Origin | India | |
| Model | RMX3201, C21 | 15 5G |
| Sim Type | Dual Sim, GSM+GSM | Dual Sim, GSM+GSM (Hybrid Slot) |
| Dual Sim | Yes | Yes |
| Sim Size | Nano+Nano SIM | Nano+Nano SIM |
| Device Type | Smartphone | Smartphone |
| OS Updates | 2 years | |
| Security Updates | 4 years | |
| Release Date | April 8, 2021 | August 01, 2025 |
| In The Box | Mobile Phone * 1, Adapter * 1, USB Type-C cable * 1, SIM Eject Tool * 1, Quick Start Guide, & Warranty Card * 1, Safety Information * 1 | |
| Design | ||
| Dimensions | 76.4 x 165.2 x 8.9 mm | 80.45 x 168.48 x 8.4 mm |
| Weight | 190 g | 217 g |
| Colors | Sandy Purple, Frosted White, Midnight Black | |
| Display | ||
| Type | Color IPS LCD Screen (16.7M) | Color IPS Screen (16M Colors) |
| Touch | Yes, 120 Hz Touch Sampling Rate | Yes, 288 Hz Touch Sampling Rate |
| Size | 6.5 inches, 1600 x 720 pixels, 60 Hz | 6.9 inches, 1080 x 2340 pixels, 144 Hz |
| Aspect Ratio | 20:09 | 20.6:9 |
| PPI | ~ 269 PPI | ~ 374 PPI |
| Screen to Body Ratio | ~ 89.5% | ~ 83.2% |
| Brightness | 850nits Peak Brightness | |
| Features | 120 Hz Touch , Sunlight Screen Support, COG Sealing Process, WideVine L3 | TÜV Rheinland Circadian Friendly, TÜV Rheinland flicker free, TÜV Rheinland Low Blue light |
| Notch | Yes, Water Drop Notch | Yes, Punch Hole |
| Memory | ||
| RAM | 4 GB | 6 GB |
| RAM Type | LPDDR4X | |
| Storage | 64 GB | 128 GB |
| Storage Type | UFS 2.2 | |
| Card Slot | Yes, upto 256 GB | Yes, (Hybrid Slot), upto 1 TB |
| Connectivity | ||
| GPRS | Yes | Yes |
| EDGE | Yes | Yes |
| 3G | Yes | Yes |
| 4G | Yes | Yes |
| 5G | Yes | |
| 5G Bands | SA: n1/n3/n5/n8/n28/n40/n78, NSA: n1/n3/n40/n78/n8 | |
| VoLTE | Yes | Yes |
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot |
| Bluetooth | Yes, v5.0 | Yes, v5.1, A2DP, LE |
| USB | Yes, microUSB | Yes, USB-C |
| USB Features | USB on-the-go, USB Charging | USB on-the-go, USB Charging |
| IR Blaster | Yes | |
| Extra | ||
| GPS | Yes | Yes, with A-GPS, Glonass, Beidou |
| Fingerprint Sensor | Yes, Rear | Yes, Side |
| Face Unlock | Yes | Yes |
| Sensors | Magnetic Induction Sensor, Light Sensor, Proximity Sensor, Acceleration Sensor | Ambient Light Sensor, Proximity Sensor (Virtual), E Compass, Accelerometer |
| 3.5mm Headphone Jack | Yes | |
| AI Features | Circle to Search, Gemini AI, AI Erase | |
| Splash Resistant | Yes | |
| IP Rating | IP64 | |
| Dust Resistant | Yes | |
| Extra Features | Night Shield, Step Tracker, Game Space, APP Market, Theme Store, Clone Phone, Phone Manager, Telephone Number Identification, TUV Rheinland Certified | Hydro Touch |
| Camera | ||
| Rear Camera | 13 MP ƒ/2.2 (Main) 2 MP ƒ/2.4 (Macro) Macro 2 MP ƒ/2.4 Mono | 50 MP ƒ/1.75 (Wide Angle) |
| Camera Sensor | CMOS Sensor | |
| Auto Focus | Yes | Yes |
| Features | 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 | AI Sky, AI Erase, Classic Film Filters |
| Video Recording | 720p, 720P | 1080p @ 30 fps FHD |
| Flash | Yes, LED | Yes, LED |
| Front Camera | 5 MP | 8 MP ƒ/2.2 (Wide Angle) Punch Hole, Screen Flash |
| Front Video Recording | 720p | 1080p @ 30 fps FHD |
| Technical | ||
| OS | Android v10, upgradable to v11 | Android v15 |
| Custom UI | HyperOS 2 | |
| Chipset | MediaTek Helio G35 | Qualcomm Snapdragon 6s Gen3 |
| CPU | 2.3 GHz, Octa Core Processor | 2.3 GHz, Octa Core Processor |
| Core Details | Arm Cortex-A53 | 2x2.3 GHz Cortex-A78 & 6x2.0 GHz Cortex-A55 |
| GPU | IMG GE8320 | Adreno 619 |
| Java | No | No |
| Browser | Yes | Yes, supports HTML5 |
| Multimedia | ||
| Yes | Yes | |
| Music | AAC, HE-AAC v1, HE-AAC v2, AMR, AWB, MIDI, MP3, OGG VORBIS | Yes |
| Video | MP4, 3GP, 3G2, 3GPP, 3GPP2, M4V, MKV | Yes |
| FM Radio | No | Yes |
| Speaker Type | Bottom Firing Loud Speaker | |
| Audio Features | Dolby Certified, 200% Super Volume | |
| Document Reader | Yes | |
| Battery | ||
| Type | Non-Removable Battery | Non-Removable Battery |
| Size | 5000 mAh, Li-Po Battery | 7000 mAh, Si-C EV-Grade Technology |
| Fast Charging | Yes, 33W | |
| Reverse Charging | Yes | Yes, 18W |