Screen size
Ridge 4G5.0"
Y51Winner: 5.5"+8.3%
Quick verdict
Ridge 4G leads the measured specs 7-4.
Measured wins
Ridge 4G
7
spec wins
Overall winner
Ties
6
equal specs
Y51
4
spec wins
Screen size
Technology
Ridge 4G
GSM / HSPA / LTE
Y51
GSM / HSPA
2G bands
Ridge 4G
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
Y51
GSM 850 / 900 / 1800 / 1900
3G bands
Ridge 4G
HSDPA 900 / 1900 / 2100
Y51
HSDPA 850 / 900 / 1900 / 2100
4G bands
Ridge 4G
1, 3, 7, 20
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
Front camera
equal specsBattery
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
-
Speed
Ridge 4G
HSPA 42.2/11.5 Mbps, LTE Cat4 150/50 Mbps
Y51
HSPA 42.2/5.76 Mbps
Announced
Ridge 4G
2015, February. Released 2015, March
Y51
2021, January 14
Status
Ridge 4G
Discontinued
Y51
Available. Released 2021, January 14
Dimensions
Ridge 4G
143 x 72 x 7.5 mm (5.63 x 2.83 x 0.30 in)
Y51
146.6 x 72.3 x 9 mm (5.77 x 2.85 x 0.35 in)
Weight
Ridge 4G
125 g (4.41 oz)
Y51
175 g (6.17 oz)
SIM
Ridge 4G
Nano-SIM + Micro-SIM
Y51
Nano-SIM + Micro-SIM
Type
Ridge 4G
IPS LCD
Y51
TN LCD
Size
Ridge 4G
5.0 inches, 68.9 cm2 (~66.9% screen-to-body ratio)
Y51
5.45 inches, 76.7 cm2 (~72.3% screen-to-body ratio)
Resolution
Ridge 4G
720 x 1280 pixels, 16:9 ratio (~294 ppi density)
Y51
480 x 960 pixels, 18:9 ratio (~197 ppi density)
Protection
Ridge 4G
Corning Gorilla Glass 3
Y51
-
OS
Ridge 4G
Android 4.4.4 (KitKat)
Y51
Android 10 (Go edition)
Chipset
Ridge 4G
Qualcomm MSM8916 Snapdragon 410 (28 nm)
Y51
-
CPU
Ridge 4G
Quad-core 1.2 GHz Cortex-A53
Y51
Quad-core 1.3 GHz Cortex-A7
GPU
Ridge 4G
Adreno 306
Y51
Mali-T820 MP1
Card slot
Ridge 4G
microSDXC (uses shared SIM slot)
Y51
microSDXC
Internal
Ridge 4G
16GB 2GB RAM
Y51
8GB 1GB RAM, 16GB 1GB RAM
Other
Ridge 4G
eMMC 4.5
Y51
-
Single
Ridge 4G
13 MP, AF
Y51
5 MP
Features
Ridge 4G
LED flash, HDR
Y51
LED flash, HDR
Video
Ridge 4G
1080p@30fps
Y51
720p@30fps
Single
Ridge 4G
5 MP
Y51
5 MP
Video
Ridge 4G
720p@30fps
Y51
Loudspeaker
Ridge 4G
Yes
Y51
Yes
3.5mm jack
Ridge 4G
Yes
Y51
Yes
WLAN
Ridge 4G
Wi-Fi 802.11 b/g/n, hotspot
Y51
Wi-Fi 802.11 b/g/n
Bluetooth
Ridge 4G
4.0, A2DP
Y51
4.2, A2DP
Positioning
Ridge 4G
GPS
Y51
GPS
NFC
Ridge 4G
No
Y51
No
Radio
Ridge 4G
FM radio
Y51
FM Radio
USB
Ridge 4G
microUSB 2.0
Y51
microUSB 2.0
Sensors
Ridge 4G
Accelerometer, proximity, compass
Y51
Accelerometer, proximity
Type
Ridge 4G
Li-Po 2400 mAh, non-removable
Y51
Li-Ion 2500 mAh, removable
Stand-by
Ridge 4G
Up to 247 h (2G) / Up to 247 h (3G)
Y51
-
Talk time
Ridge 4G
Up to 17 h (2G) / Up to 14 h 40 min (3G)
Y51
-
Colors
Ridge 4G
Black Grey, Black Bleen, Black Clementine, Arctic Gold
Y51
Deep Grey, Gold, Mint
SAR EU
Ridge 4G
0.29 W/kg (head) 0.57 W/kg (body)
Y51
-
Models
Ridge 4G
-
Y51
W-K211-TH
SAR
Ridge 4G
-
Y51
0.70 W/kg (head) 1.55 W/kg (body)
Price
Ridge 4G
-
Y51
About 70 EUR