Screen size
s4009 Crystal4.0"
s5027 Bolt ProWinner: 5.0"+20%
Quick verdict
s5027 Bolt Pro leads the measured specs 8-3.
Measured wins
s4009 Crystal
3
spec wins
Ties
6
equal specs
s5027 Bolt Pro
8
spec wins
Overall winner
Screen size
Technology
s4009 Crystal
GSM / HSPA
s5027 Bolt Pro
GSM / HSPA
2G bands
s4009 Crystal
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
s5027 Bolt Pro
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands
s4009 Crystal
HSDPA 850 / 1900 / 2100
s5027 Bolt Pro
HSDPA 850 / 1900
Speed
s4009 Crystal
HSPA 21.1/5.76 Mbps
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
equal specsMain camera
Front 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
s5027 Bolt Pro
HSPA 21.1/5.76 Mbps
Announced
s4009 Crystal
2017, June. Released 2017, June
s5027 Bolt Pro
2017, April. Released 2017, April
Status
s4009 Crystal
Discontinued
s5027 Bolt Pro
Discontinued
Dimensions
s4009 Crystal
127 x 66 x 10.7 mm (5.0 x 2.60 x 0.42 in)
s5027 Bolt Pro
144.8 x 72.8 x 10 mm (5.70 x 2.87 x 0.39 in)
Weight
s4009 Crystal
-
s5027 Bolt Pro
154 g (5.43 oz)
SIM
s4009 Crystal
Dual SIM (Mini-SIM/ Micro-SIM, dual stand-by)
s5027 Bolt Pro
Dual SIM (Micro-SIM/ Mini-SIM, dual stand-by)
Type
s4009 Crystal
TFT
s5027 Bolt Pro
TFT
Size
s4009 Crystal
4.0 inches, 45.5 cm2 (~54.3% screen-to-body ratio)
s5027 Bolt Pro
5.0 inches, 68.9 cm2 (~65.4% screen-to-body ratio)
Resolution
s4009 Crystal
480 x 800 pixels, 5:3 ratio (~233 ppi density)
s5027 Bolt Pro
480 x 854 pixels, 16:9 ratio (~196 ppi density)
OS
s4009 Crystal
Android 6.0 (Marshmallow)
s5027 Bolt Pro
Android 6.0 (Marshmallow)
Chipset
s4009 Crystal
Mediatek MT6570 (28 nm)
s5027 Bolt Pro
Spreadtrum SC7731C
CPU
s4009 Crystal
Dual-core 1.3 GHz Cortex-A7
s5027 Bolt Pro
Quad-core 1.2 GHz Cortex-A7
GPU
s4009 Crystal
Mali-400
s5027 Bolt Pro
Mali-400
Card slot
s4009 Crystal
microSDXC
s5027 Bolt Pro
microSDHC
Internal
s4009 Crystal
8GB 512MB RAM
s5027 Bolt Pro
8GB 1GB RAM
Single
s4009 Crystal
5 MP, f/2.4
s5027 Bolt Pro
8 MP, f/2.4, AF
Features
s4009 Crystal
LED flash, panorama
s5027 Bolt Pro
LED flash, panorama
Video
s4009 Crystal
720p@30fps
s5027 Bolt Pro
720p@30fps
Single
s4009 Crystal
2 MP
s5027 Bolt Pro
8 MP, f/2.4
Video
s4009 Crystal
s5027 Bolt Pro
Loudspeaker
s4009 Crystal
Yes
s5027 Bolt Pro
Yes
3.5mm jack
s4009 Crystal
Yes
s5027 Bolt Pro
Yes
WLAN
s4009 Crystal
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
s5027 Bolt Pro
Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Bluetooth
s4009 Crystal
4.0, A2DP, LE
s5027 Bolt Pro
2.1, A2DP
Positioning
s4009 Crystal
GPS
s5027 Bolt Pro
GPS
NFC
s4009 Crystal
No
s5027 Bolt Pro
No
Radio
s4009 Crystal
Stereo FM radio
s5027 Bolt Pro
Stereo FM radio
USB
s4009 Crystal
microUSB 2.0
s5027 Bolt Pro
microUSB 2.0
Sensors
s4009 Crystal
Accelerometer
s5027 Bolt Pro
Accelerometer
Type
s4009 Crystal
Li-Ion 1200 mAh, removable
s5027 Bolt Pro
Li-Ion 2000 mAh, removable
Stand-by
s4009 Crystal
Up to 150 h (3G)
s5027 Bolt Pro
Up to 240 h (3G)
Talk time
s4009 Crystal
Up to 4 h (3G)
s5027 Bolt Pro
Up to 8 h (3G)
Colors
s4009 Crystal
Black/Gold
s5027 Bolt Pro
Black, Gold
SAR
s4009 Crystal
1.13 W/kg (head) 0.81 W/kg (body)
s5027 Bolt Pro
-