LG K51S vs Realme C100x
Product
Price
180 USD
180 USD
Status
Available
Available
Brand
LG Mobiles
Realme Mobiles
Model No
K51S
RMX5366
Launch Date
2020, April 27
2026, May 07
Wikipedia
Technology
GSM / HSPA / LTE
GSM / HSPA / LTE
2G bands
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only)
GSM 850 / 900 / 1800 / 1900
3G bands
HSDPA 850 / 900 / 1900 / 2100
HSDPA 900 / 2100
4G bands
1, 3, 7, 8, 20, 28, 38
1, 3, 5, 8, 40
Speed
HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 300/50 Mbps
HSPA, LTE
Dimensions
165.2 x 76.7 x 8.2 mm
166.5 x 78.2 x 8.6 mm (6.56 x 3.08 x 0.34 in)
Weight
194.5 g (6.88 oz)
219 g (7.72 oz)
Build
Scratch-resistant glass
Glass front, plastic frame, plastic back
IP64 dust tight and water resistant (water splashes)
Drop resistant up to 2m
MIL-STD-810H compliant*
* does not guarantee ruggedness or use in extreme conditions
RGB light on the back (notifications, etc.)
SIM
Single SIM (Nano-SIM) or Dual SIM (Nano-SIM, dual stand-by)
Nano-SIM + Nano-SIM
Colors
Titanium, Pink, Blue, Red
Golden Coast, Deepblue Tides
Type
IPS LCD capacitive touchscreen, 16M colors
IPS LCD, 120Hz, 900 nits (HBM)
Size
6.55 inches, 93.6 cm2 (~73.8% screen-to-body ratio)
6.8 inches, 113.0 cm2 (~86.8% screen-to-body ratio)
Resolution
720 x 1600 pixels, 20:9 ratio (~282 ppi density)
720 x 1570 pixels, 19.5:9 ratio (~254 ppi density)
OS
Android 9.0 (Pie)
Android 16
Chipset
Mediatek MT6765 Helio P35 (12nm)
Unisoc T7250 (12 nm)
CPU
Octa-core (4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53)
Octa-core (2x1.8 GHz Cortex-A75 & 6x1.6 GHz Cortex-A55)
GPU
PowerVR GE8320
Mali-G57 MP1
RAM
3GB
4GB/6GB
Storage
64GB Built-in, eMMC 5.1
128GB/256GB
Card Slot
microSDXC (dedicated slot)
microSDXC
Lens 1
32 MP, (wide), PDAF
50 MP, f/1.8, (wide), PDAF
Lens 2
5 MP, f/2.2, 115˚, (ultrawide)
Auxiliary lens
Lens 3
2 MP, f/2.4, (macro)
Lens 4
2 MP, f/2.4, (depth)
Features
Quad Camera: 32 MP, (wide), PDAF + 5 MP, (ultrawide) + 2 MP (macro) + 2 MP (depth), LED Flash Features Geo-tagging, touch focus, face/smile detection, panorama, HDR, Video (1080p@30fps) Front 13 MP, Video (1080p@30fps)
LED flash, HDR, panorama
Video
1080p@30fps
Lens 1
13 MP
5 MP, f/2.2, (wide)
Video
1080p@30fps
720p@30fps
Capacity
(Li-Po Non removable), 4000 mAh
Si/C Li-Ion 8000mAh
Charging
45W wired, 45W PPS, 13.5W PD
Reverse wired
Sensors
Fingerprint (rear-mounted), accelerometer, proximity, compass
Fingerprint (side-mounted), accelerometer, proximity, compass
Loudspeaker
Yes
Yes
3.5mm jack
3.5mm Audio Jack, MP4/DviX/XviD/H.265/WMV player, MP3/WAV/FLAC/eAAC+/WMA player,
Yes
WLAN
Wi-Fi 802.11 a/b/g/n, Wi-Fi Direct, DLNA, hotspot
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Bluetooth
5.0, A2DP, LE
5.2, A2DP, LE
GPS
Yes, with A-GPS
GPS, GALILEO, GLONASS, BDS
NFC
Yes
Yes
USB
2.0, Type-C 1.0 reversible connector, USB On-The-Go
USB Type-C 2.0, OTG