Screen size
E288s2.8"
Energy 400Winner: 4.0"+30%
Quick verdict
Energy 400 leads the measured specs 8-3.
Measured wins
E288s
3
spec wins
Ties
6
equal specs
Energy 400
8
spec wins
Overall winner
Screen size
Technology
E288s
GSM / HSPA / LTE
Energy 400
GSM / HSPA
2G bands
E288s
GSM 850 / 900 / 1800 / 1900
Energy 400
GSM 900 / 1900 / 850 - SIM 1 & SIM 2
3G bands
E288s
HSDPA 850 / 900 / 2100
Energy 400
HSDPA 850 / 1900 - EM4EI043, HSDPA 900 / 2100 - EM4EI047
4G bands
E288s
1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 38, 40, 41, 66
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
equal specsRAM
Storage
equal specsMain camera
Front camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
5G support
equal specsNFC
equal specs3.5mm jack
equal specsSD card
equal specsStereo speakers
Energy 400
-
Speed
E288s
HSPA, LTE
Energy 400
HSPA 21.1/5.76 Mbps
Announced
E288s
2024, April
Energy 400
2015, January. Released 2015, June
Status
E288s
Available. Released 2024, August
Energy 400
Discontinued
Dimensions
E288s
138 x 58.2 x 12.8 mm (5.43 x 2.29 x 0.50 in)
Energy 400
134.5 x 73.6 x 18.8 mm (5.30 x 2.90 x 0.74 in)
Weight
E288s
116 g (4.09 oz)
Energy 400
367 g (12.95 oz)
SIM
E288s
Nano-SIM + Nano-SIM
Energy 400
Mini-SIM
Other
E288s
-
Energy 400
IP68 dust tight and water resistant (immersible up to 1.8m for 30 min)
Type
E288s
TFT
Energy 400
IPS LCD
Size
E288s
2.8 inches, 24.3 cm2 (~30.2% screen-to-body ratio)
Energy 400
4.0 inches, 45.5 cm2 (~46.0% screen-to-body ratio)
Resolution
E288s
240 x 320 pixels, 4:3 ratio (~143 ppi density)
Energy 400
480 x 800 pixels, 5:3 ratio (~233 ppi density)
OS
E288s
KaiOS 2.X
Energy 400
Android 4.4 (KitKat)
Chipset
E288s
Mediatek MT6739WW (28 nm)
Energy 400
Mediatek MT6572 (28 nm)
CPU
E288s
Quad-core 1.3 GHz
Energy 400
Dual-core 1.3 GHz Cortex-A7
GPU
E288s
-
Energy 400
Mali-400
Card slot
E288s
microSDXC
Energy 400
microSDXC (dedicated slot)
Internal
E288s
4GB 512MB RAM
Energy 400
4GB 512MB RAM
Single
E288s
0.3 MP
Energy 400
8 MP, AF
Features
E288s
LED flash
Energy 400
LED flash, HDR
Video
E288s
Yes
Energy 400
720p@30fps
Single
E288s
Yes
Energy 400
1.3 MP
Video
E288s
Energy 400
Loudspeaker
E288s
Yes
Energy 400
Yes
3.5mm jack
E288s
Yes
Energy 400
Yes
WLAN
E288s
Yes
Energy 400
Wi-Fi 802.11 a/b/g/n, hotspot
Bluetooth
E288s
4.2, A2DP
Energy 400
4.0, A2DP, LE
Positioning
E288s
GPS
Energy 400
GPS
NFC
E288s
No
Energy 400
No
Radio
E288s
FM radio
Energy 400
Stereo FM radio
USB
E288s
USB Type-C
Energy 400
microUSB 2.0
Sensors
E288s
No
Energy 400
Accelerometer, proximity
Type
E288s
Li-Ion 2000 mAh, removable
Energy 400
Li-Ion 2400 mAh, removable
Stand-by
E288s
-
Energy 400
Up to 400 h
Talk time
E288s
-
Energy 400
Up to 15 h
Colors
E288s
Black
Energy 400
Gray