Realme C51 vs Xiaomi Redmi 15a
Product
Price
159 USD
159 USD
Status
Available
Available
Brand
Realme Mobiles
Xiaomi Mobiles
Model No
RMX3830
Xiaomi Redmi 15a
Launch Date
2023, August 01
2026, March 27
Website
Technology
GSM / HSPA / LTE
GSM / HSPA / LTE / 5G
2G bands
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
GSM 850 / 900 / 1800 / 1900
3G bands
HSDPA 850 / 900 / 2100
HSDPA 850 / 900 / 2100
4G bands
1, 3, 5, 8, 38, 40, 41 - Africa, India
1, 3, 5, 7, 8, 20, 28, 38, 40, 41 - Asia
1, 3, 5, 8, 28, 40, 41
Speed
HSPA, LTE-A
HSPA, LTE, 5G
5G bands
1, 3, 5, 8, 28, 40, 41, 78 SA/NSA
Dimensions
167.2 x 76.7 x 8 mm (6.58 x 3.02 x 0.31 in)
171.6 x 79.5 x 8.2 mm (6.76 x 3.13 x 0.32 in)
Weight
186 g (6.56 oz)
210 g (7.41 oz)
Build
Glass front, plastic frame, plastic back
SIM
Dual SIM (Nano-SIM, dual stand-by)
Nano-SIM + Nano-SIM
Colors
Mint Green, Carbon Black
Black, Blue, Purple
Type
IPS LCD, 90Hz, 560 nits (peak)
IPS LCD, 120Hz, 800 nits (peak)
Size
6.74 inches, 109.7 cm2 (~85.5% screen-to-body ratio)
6.9 inches, 114.9 cm2 (~84.3% screen-to-body ratio)
Resolution
720 x 1600 pixels, 20:9 ratio (~260 ppi densit
720 x 1600 pixels, 20:9 ratio (~254 ppi density)
OS
Android 13, Realme UI T
Android 16, HyperOS 3, up to 4 major Android upgrades
Chipset
Unisoc Tiger T612 (12 nm)
Unisoc T8300 (6 nm)
CPU
Octa-core (2x1.8 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)
Octa-core (2x2.2 GHz Cortex-A78 & 6x2.0 GHz Cortex-A55)
GPU
Mali-G57
Mali-G57 MC2
RAM
4GB
4GB/6GB
Storage
64GB/128GB
еMMC 5.1
64GB/128GB
Card Slot
microSDXC (dedicated slot)
Lens 1
50 MP, f/1.8, 27mm (wide), 1/2.76", 0.64µm, PDAF
32 MP, f/2.0, (wide), 1.12µm, AF
Lens 2
0.08 MP, f/3.0, (depth)
Auxiliary lens
Features
LED flash, HDR, panorama
Video
1080p@30fps
Lens 1
5 MP, f/2.2, 28mm (wide), 1/5", 1.12µm
8 MP, f/2.0, (wide), 1/4.0", 1.12µm
Features
HDR
HDR
Video
720p@30fps
1080p@30fps
Capacity
Li-Po 5000 mAh, non-removable
6300 mAh
Charging
33W wired, 0-50% in 28 min (advertised)
15W wired
7.5W reverse wired
Sensors
Fingerprint (side-mounted), accelerometer, proximity, compass
Fingerprint (side-mounted), accelerometer, compass
Virtual proximity sensing
Loudspeaker
Yes
Yes
3.5mm jack
Yes
Yes
WLAN
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Bluetooth
5.0, A2DP, LE
5.4, A2DP, LE
GPS
GPS, GLONASS, GALILEO
GPS, GLONASS, GALILEO, BDS
NFC
Yes, 360˚ (market/region dependent)
USB
USB Type-C 2.0, OTG
USB Type-C 2.0, OTG
Radio
FM radio, recording