Screen size
Go Flip 42.8"
OT-990Winner: 3.5"+20%
Quick verdict
Go Flip 4 leads the measured specs 6-5.
Measured wins
Go Flip 4
6
spec wins
Overall winner
Ties
4
equal specs
OT-990
5
spec wins
Screen size
Technology
Go Flip 4
GSM / HSPA / LTE
OT-990
GSM / HSPA
2G bands
Go Flip 4
GSM 850 / 1900
OT-990
GSM 850 / 900 / 1800 / 1900
3G bands
Go Flip 4
HSDPA 850 / 1700(AWS) / 1900
OT-990
HSDPA 900 / 2100 , HSDPA 850 / 1900
4G bands
Go Flip 4
2, 4, 5, 12, 25, 26, 41, 66, 71
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
Front camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
equal specs5G support
equal specsNFC
3.5mm jack
equal specsSD card
equal specsStereo speakers
OT-990
-
Speed
Go Flip 4
HSPA, LTE
OT-990
HSPA 7.2/0.384 Mbps
Announced
Go Flip 4
2021, September
OT-990
2011, February. Released 2011, August
Status
Go Flip 4
Available. Released 2021, September
OT-990
Discontinued
Dimensions
Go Flip 4
107.3 x 55.6 x 19.9 mm (4.22 x 2.19 x 0.78 in)
OT-990
116 x 62.2 x 12.2 mm (4.57 x 2.45 x 0.48 in)
Weight
Go Flip 4
133 g (4.69 oz)
OT-990
144 g (5.08 oz)
SIM
Go Flip 4
Nano-SIM
OT-990
Mini-SIM
Other
Go Flip 4
-
OT-990
Optical trackpad
Type
Go Flip 4
TN TFT LCD
OT-990
TFT, 256K colors
Size
Go Flip 4
2.8 inches, 24.3 cm2 (~40.7% screen-to-body ratio)
OT-990
3.5 inches, 36.5 cm2 (~50.6% screen-to-body ratio)
Resolution
Go Flip 4
240 x 320 pixels, 4:3 ratio (~143 ppi density)
OT-990
320 x 480 pixels, 3:2 ratio (~165 ppi density)
Other
Go Flip 4
Second external TN TFT display, 1.44 inches, 128 x 128 pixels
OT-990
-
OS
Go Flip 4
KaiOS 3.0
OT-990
Android 2.2 (Froyo)
Chipset
Go Flip 4
QM215 Snapdragon 215 (28 nm)
OT-990
-
CPU
Go Flip 4
Quad-core 1.3 GHz Cortex-A53
OT-990
600 MHz
GPU
Go Flip 4
Adreno 308
OT-990
-
Card slot
Go Flip 4
microSDHC (dedicated slot)
OT-990
microSDHC (dedicated slot)
Internal
Go Flip 4
4GB 512MB RAM
OT-990
150MB
Single
Go Flip 4
2 MP
OT-990
5 MP, AF
Video
Go Flip 4
480p@30fps
OT-990
Yes
Features
Go Flip 4
-
OT-990
LED flash
Other
Go Flip 4
No
OT-990
-
Single
Go Flip 4
-
OT-990
Yes
Video
Go Flip 4
-
OT-990
Loudspeaker
Go Flip 4
Yes
OT-990
Yes
3.5mm jack
Go Flip 4
Yes
OT-990
Yes
WLAN
Go Flip 4
Wi-Fi 802.11 b/g/n, hotspot
OT-990
Wi-Fi 802.11 b/g/n, hotspot
Bluetooth
Go Flip 4
4.2, A2DP
OT-990
2.1, A2DP
Positioning
Go Flip 4
GPS
OT-990
GPS, A-GPS
NFC
Go Flip 4
No
OT-990
-
Radio
Go Flip 4
FM radio
OT-990
Stereo FM radio, RDS
USB
Go Flip 4
USB Type-C 2.0
OT-990
microUSB 2.0
Sensors
Go Flip 4
OT-990
Accelerometer, proximity, compass
Browser
Go Flip 4
-
OT-990
WAP 2.0/xHTML, HTML
Other
Go Flip 4
-
OT-990
MP3/AAC+/WAV/WMA player MP4/H.264 player Organizer Document viewer Voice memo Predictive text input
Type
Go Flip 4
Li-Ion 1850 mAh
OT-990
Removable Li-Ion 1300 mAh battery
Stand-by
Go Flip 4
-
OT-990
Up to 550 h
Talk time
Go Flip 4
-
OT-990
Up to 6 h
Colors
Go Flip 4
Midnight Blue
OT-990
Bluish black, Auberguine, Spicy red
Models
Go Flip 4
4056W
OT-990
-
SAR
Go Flip 4
0.78 W/kg (head) 1.27 W/kg (body)
OT-990
-
Price
Go Flip 4
About 120 EUR
OT-990
About 110 EUR
SAR EU
Go Flip 4
-
OT-990
0.96 W/kg (head) 1.12 W/kg (body)