Screen size
Folder 2Winner: 2.8"+29%
KF3902.0"
Quick verdict
Folder 2 leads the measured specs 7-5.
Measured wins
Folder 2
7
spec wins
Overall winner
Ties
3
equal specs
KF390
5
spec wins
Screen size
Technology
Folder 2
GSM / HSPA / LTE
KF390
GSM / HSPA
2G bands
Folder 2
GSM 850 / 900 / 1800 / 1900
KF390
GSM 900 / 1800 / 1900 , GSM 850 / 900 / 1800 / 1900 for Brazil
3G bands
Folder 2
HSDPA 900 / 2100
KF390
HSDPA 850 / 2100
4G bands
Folder 2
LTE
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
equal specsFront camera
Battery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
5G support
equal specsNFC
3.5mm jack
SD card
equal specsStereo speakers
KF390
-
Speed
Folder 2
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
KF390
HSPA 7.2/0.384 Mbps
Announced
Folder 2
2020, April 14. Released 2020, April 17
KF390
2008, July. Released 2009, Q1
Status
Folder 2
Discontinued
KF390
Discontinued
Dimensions
Folder 2
107.9 x 55 x 18 mm (4.25 x 2.17 x 0.71 in)
KF390
99 x 48 x 17.4 mm (3.90 x 1.89 x 0.69 in)
Weight
Folder 2
127 g (4.48 oz)
KF390
110 g (3.88 oz)
SIM
Folder 2
Nano-SIM
KF390
Mini-SIM
Type
Folder 2
IPS LCD
KF390
TFT, 256K colors
Size
Folder 2
2.8 inches, 24.3 cm2 (~40.9% screen-to-body ratio)
KF390
2.0 inches, 12.6 cm2 (~26.5% screen-to-body ratio)
Resolution
Folder 2
240 x 320 pixels, 4:3 ratio (~143 ppi density)
KF390
176 x 220 pixels (~141 ppi density)
Other
Folder 2
External 0.9 inches monochrome display
KF390
-
Card slot
Folder 2
microSDXC
KF390
microSDHC (dedicated slot)
Phonebook
Folder 2
Practically unlimited entries and fields, Photocal
KF390
500 entries
Call records
Folder 2
Practically unlimited
KF390
40 dialed, 40 received, 40 missed calls
Internal
Folder 2
8GB 1GB RAM
KF390
50MB
Single
Folder 2
2 MP
KF390
2 MP
Video
Folder 2
Yes
KF390
Yes
Other
Folder 2
Uses main camera
KF390
-
Single
Folder 2
-
KF390
Videocall camera
Video
Folder 2
-
KF390
Loudspeaker
Folder 2
Yes
KF390
Yes
Alert types
Folder 2
-
KF390
Vibration; Downloadable polyphonic, MP3 ringtones
3.5mm jack
Folder 2
-
KF390
No
WLAN
Folder 2
Wi-Fi 802.11 b/g/n
KF390
No
Bluetooth
Folder 2
Yes
KF390
1.2
Positioning
Folder 2
GPS
KF390
No
NFC
Folder 2
No
KF390
-
Radio
Folder 2
FM radio
KF390
FM radio
USB
Folder 2
Yes
KF390
2.0
Sensors
Folder 2
KF390
Messaging
Folder 2
SMS(threaded view), MMS, Email, Push Email, IM
KF390
SMS, MMS, Email
Games
Folder 2
Downloadable
KF390
Yes
Java
Folder 2
No
KF390
Yes, MIDP 2.0
Browser
Folder 2
-
KF390
WAP 2.0/xHTML, HTML
Other
Folder 2
-
KF390
MP3/WAV/eAAC+ player H263/3GP player Predictive text input Voice memo
Type
Folder 2
Li-Ion 1470 mAh, removable
KF390
Removable Li-Ion battery
Stand-by
Folder 2
-
KF390
Up to 250 h
Talk time
Folder 2
-
KF390
Up to 3 h
Colors
Folder 2
White, Platinum Gray
KF390
Black
Price
Folder 2
About 150 EUR
KF390
About 60 EUR