Both Realme C25 (4GB RAM + 128GB) and Xiaomi Redmi A3 (4GB RAM + 128GB) comes with same RAM. In terms of display resolution, Xiaomi Redmi A3 (4GB RAM + 128GB) has better resolution of 1650 x 720 than Realme C25 (4GB RAM + 128GB) which has resolution of 720 x 1600. Both have the same amount of internal memory.
| Name | Realme C25 (4GB RAM + 128GB) | Xiaomi Redmi A3 (4GB RAM + 128GB) | 
| RAM | 4 GB | 4 GB | 
|---|---|---|
| Display | 6.5 in | 6.71 in | 
| Internal Memory | 128 GB | 128 GB | 
| Battery | 6000 mAh | 5000 mAh | 
| Camera | 13 MP + 2 MP + 2 MP Triple | 8 MP Dual | 
| Price | Rs. 7950 | Rs. 7399 | 
The launch Date of the first phone is April 8, 2021. The cost of Realme C25 (4GB RAM + 128GB) is Rs. 7950. The launch Date of the second phone is February 14, 2024. The cost of Xiaomi Redmi A3 (4GB RAM + 128GB) is Rs. 7399.
Realme C25 (4GB RAM + 128GB) has screen size of 6.5 inches which falls short to Xiaomi Redmi A3 (4GB RAM + 128GB)'s 6.71 inch screen. Realme C25 (4GB RAM + 128GB) has LCD Screen type where as Xiaomi Redmi A3 (4GB RAM + 128GB) has IPS Screen type. Realme's phone has display density of 269 PPI & Xiaomi's phone has only 263 PPI display density. In terms of screen to body ratio, Xiaomi's phone has better screen to body ratio of ~ 90% than Realme's phone ~ 88.7%. Realme C25 (4GB RAM + 128GB) has 20:09 aspect ratio where as Xiaomi Redmi A3 (4GB RAM + 128GB) has 20.5:9 aspect ratio.
Both mobiles come with 4 GB RAM and both have same Internal Memory of 128 GB.
Realme C25 (4GB RAM + 128GB)'s 13 MP + 2 MP + 2 MP Triple Rear Camera outclasses Xiaomi Redmi A3 (4GB RAM + 128GB)'s 8 MP Dual Rear Camera in terms of resolution. Realme C25 (4GB RAM + 128GB) will be better choice if you're looking to click lot of selfies as it has better 8 MP Front Camera in comparison to Xiaomi Redmi A3 (4GB RAM + 128GB)'s 5 MP Front Camera.
Both the phones has Android Operating System but the first one runs on version 11 and the second one on 13 version.
| Name | Realme C25 (4GB RAM + 128GB) | Xiaomi Redmi A3 (4GB RAM + 128GB) | 
| General | ||
| Model | RMX3193, C25 | Redmi A3 | 
| 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 | April 8, 2021 | February 14, 2024 | 
| In The Box | Handset, Adapter, USB Type-C Cable, Sim Eject Tool, Quick Start Guide, Warranty Card | |
| Design | ||
| Dimensions | 75.9 x 164.5 x 9.6 mm | 76.3 x 168.3 x 8.32 mm | 
| Weight | 209 g | 199 g | 
| Colors | Olive Green, Midnight Black, Lake Blue | |
| Display | ||
| Type | Color LCD Screen (16.7M) | Color IPS Screen (16M Colors) | 
| Touch | Yes | Yes | 
| Size | 6.5 inches, 1600 x 720 pixels, 60 Hz | 6.71 inches, 720 x 1650 pixels, 90 Hz | 
| Aspect Ratio | 20:09 | 20.5:9 | 
| PPI | ~ 269 PPI | ~ 263 PPI | 
| Screen to Body Ratio | ~ 88.7% | ~ 90% | 
| Glass Type | Corning Gorilla Glass 3 | |
| Features | Sunlight Screen Support, COG Sealing Process, WideVine L3 | Brightness: 500 nits | 
| Notch | Yes, Water Drop Notch | Yes, Water Drop Notch | 
| Memory | ||
| RAM | 4 GB | 4 GB | 
| Expandable RAM | Upto 4 GB Extra Virtual RAM | |
| Storage | 128 GB | 128 GB | 
| Card Slot | Yes, upto 256 GB | Yes, upto 1 TB | 
| Connectivity | ||
| GPRS | Yes | Yes | 
| EDGE | Yes | Yes | 
| 3G | Yes | Yes | 
| 4G | Yes | Yes | 
| VoLTE | Yes | Yes, Dual Stand-By | 
| Wifi | Yes, with wifi-hotspot | Yes, with wifi-hotspot | 
| Wifi Version | 802.11 a/b/g/n/ac, 2.4GHz/5GHz | |
| Bluetooth | Yes, v5.0 | Yes, v5.3 | 
| USB | Yes, USB-C | Yes, USB-C v2.0 | 
| USB Features | USB on-the-go, USB Charging | USB Tethering, USB on-the-go, USB Charging | 
| IR Blaster | No | |
| Extra | ||
| GPS | Yes | Yes, with GPS, AGPS, 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, Accelerometer | 
| 3.5mm Headphone Jack | Yes | Yes | 
| Splash Resistant | Yes | |
| Extra Features | Heat Dissipation Technology: Dual Layer Graphite + Copper Foil, Night Shield, Game Space, APP Market, Theme Store, Clone Phone, Phone Manager, Google Lens | SAR Limit: 1.6 W/kg, Head: 0.839 W/kg, Body: 0.773 W/kg, Speaker : Mono | 
| Camera | ||
| Rear Camera | 13 MP ƒ/2.2 (Main) 2 MP ƒ/2.4 Portrait 2 MP ƒ/2.4 (Macro) Macro | 8 MP ƒ/2 (Wide Angle) AI Lens | 
| Camera Sensor | CMOS Sensor | |
| Auto Focus | Yes | Yes | 
| Features | Supports 20 Continuous Shooting, Photograph Functions: Beauty, Filter, HDR, Panoramic View, Portrait, Timelapse, Slo-mo, NightScape, Expert, Slow-mo Video Recording | HDR Mode, Photo Mode, Video Mode, Portrait Mode, Film Filters, Timelapse, Timed Burst, Voice Shutter, Palm Shutter, Watermark, Google Lens | 
| Video Recording | 720p, 720P | 1080p @ 30 fps FHD | 
| Flash | Yes, LED | Yes, Dual LED | 
| Front Camera | 8 MP ƒ/2 Screen Flash | 5 MP ƒ/2.2 | 
| Front Video Recording | 1080p @ 30 fps FHD | |
| Technical | ||
| OS | Android v11 | Android v13 | 
| Chipset | Mediatek Helio G70 | Mediatek Helio G36 | 
| CPU | 2 GHz, Octa Core Processor | 2.2 GHz, Octa Core Processor | 
| Core Details | 2x2.0 GHz Cortex-A75 & 6x1.7 GHz Cortex-A55 | 4x Cortex-A53@2.2 GHz & 4x Cortex-A53@1.7 GHz | 
| GPU | ARM G52 MC2 | PowerVR GE8320 | 
| Java | No | No | 
| Browser | Yes | Yes, supports HTML5 | 
| Multimedia | ||
| Yes | Yes | |
| Music | AAC, APE, FLAC, AMR, MID, MP3, OGG, WAV, WMA, MKA | MP3, AMR, FLAC, APE | 
| Video | MP4, 3GP, ASF, AVI, FLV, M2TS, MKV, MPG, TS, WEBM, WMV | MP4, M4V. MKV, XVID | 
| FM Radio | No | Yes | 
| Document Reader | Yes | |
| Battery | ||
| Type | Non-Removable Battery | Non-Removable Battery | 
| Size | 6000 mAh, Li-Po Battery | 5000 mAh, Li-Po Battery | 
| Fast Charging | Yes, 18W Fast Charging | Yes, 10W Fast Charging |