Screen size
Sunny4.0"
Y51Winner: 5.5"+27%
Quick verdict
Y51 leads the measured specs 7-2.
Measured wins
Sunny
2
spec wins
Ties
8
equal specs
Y51
7
spec wins
Overall winner
Screen size
Technology
Sunny
GSM / HSPA
Y51
GSM / HSPA
2G bands
Sunny
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
Y51
GSM 850 / 900 / 1800 / 1900
3G bands
Sunny
HSDPA 900 / 2100
Y51
HSDPA 850 / 900 / 1900 / 2100
Speed
Sunny
HSPA 21.1/5.76 Mbps
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
equal specsRAM
Storage
equal specsMain camera
equal specsFront camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
equal specs5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
Y51
HSPA 42.2/5.76 Mbps
Announced
Sunny
2016, February. Released 2016, May
Y51
2021, January 14
Status
Sunny
Discontinued
Y51
Available. Released 2021, January 14
Dimensions
Sunny
128.4 x 66.2 x 11.3 mm (5.06 x 2.61 x 0.44 in)
Y51
146.6 x 72.3 x 9 mm (5.77 x 2.85 x 0.35 in)
Weight
Sunny
123 g (4.34 oz)
Y51
175 g (6.17 oz)
SIM
Sunny
Mini-SIM
Y51
Nano-SIM + Micro-SIM
Type
Sunny
TFT
Y51
TN LCD
Size
Sunny
4.0 inches, 45.5 cm2 (~53.6% screen-to-body ratio)
Y51
5.45 inches, 76.7 cm2 (~72.3% screen-to-body ratio)
Resolution
Sunny
480 x 800 pixels, 5:3 ratio (~233 ppi density)
Y51
480 x 960 pixels, 18:9 ratio (~197 ppi density)
OS
Sunny
Android 6.0 (Marshmallow)
Y51
Android 10 (Go edition)
Chipset
Sunny
Mediatek MT6580M (28 nm)
Y51
-
CPU
Sunny
Quad-core 1.3 GHz Cortex-A7
Y51
Quad-core 1.3 GHz Cortex-A7
GPU
Sunny
Mali-400MP2
Y51
Mali-T820 MP1
Card slot
Sunny
microSDXC (dedicated slot)
Y51
microSDXC
Internal
Sunny
8GB 512MB RAM
Y51
8GB 1GB RAM, 16GB 1GB RAM
Single
Sunny
5 MP, f/2.2, 1/5.0", 1.12µm
Y51
5 MP
Features
Sunny
LED flash, panorama, HDR
Y51
LED flash, HDR
Video
Sunny
1080p@30fps
Y51
720p@30fps
Single
Sunny
VGA, f/2.8, 1/10", 2.2µm
Y51
5 MP
Video
Sunny
Y51
Loudspeaker
Sunny
Yes
Y51
Yes
3.5mm jack
Sunny
Yes
Y51
Yes
WLAN
Sunny
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Y51
Wi-Fi 802.11 b/g/n
Bluetooth
Sunny
4.0, A2DP
Y51
4.2, A2DP
Positioning
Sunny
GPS
Y51
GPS
NFC
Sunny
No
Y51
No
Radio
Sunny
FM radio
Y51
FM Radio
USB
Sunny
microUSB 2.0, OTG
Y51
microUSB 2.0
Sensors
Sunny
Accelerometer, proximity
Y51
Accelerometer, proximity
Type
Sunny
Li-Ion 1200 mAh, removable
Y51
Li-Ion 2500 mAh, removable
Stand-by
Sunny
Up to 270 h (2G) / Up to 270 h (3G)
Y51
-
Talk time
Sunny
Up to 10 h (2G) / Up to 5 h (3G)
Y51
-
Colors
Sunny
True Black, Pure White, Flashy Red, Bleen, Hot Pink
Y51
Deep Grey, Gold, Mint
SAR EU
Sunny
0.62 W/kg (head) 0.64 W/kg (body)
Y51
-
Models
Sunny
-
Y51
W-K211-TH
SAR
Sunny
-
Y51
0.70 W/kg (head) 1.55 W/kg (body)
Price
Sunny
-
Y51
About 70 EUR