Screen size
A4+Winner: 4.0"+56%
K1+ Stereo1.8"
Quick verdict
A4+ leads the measured specs 8-2.
Measured wins
A4+
8
spec wins
Overall winner
Ties
3
equal specs
K1+ Stereo
2
spec wins
Screen size
Technology
A4+
GSM
K1+ Stereo
GSM
2G bands
A4+
GSM 900 / 1800 / 1900 - SIM 1 & SIM 2
K1+ Stereo
GSM 900 / 1800 - SIM 1 & SIM 2
GPRS
A4+
Yes
K1+ Stereo
Yes
EDGE
A4+
Yes
K1+ Stereo
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
5G support
equal specsNFC
equal specs3.5mm jack
SD card
equal specsStereo speakers
No
Announced
A4+
2013. Released 2013
K1+ Stereo
2012
Status
A4+
Discontinued
K1+ Stereo
Discontinued
Dimensions
A4+
123 x 63 x 10.5 mm (4.84 x 2.48 x 0.41 in)
K1+ Stereo
109 x 44 x 14.4 mm (4.29 x 1.73 x 0.57 in)
Weight
A4+
87.5 g without battery (3.07 oz)
K1+ Stereo
78 g (2.75 oz)
SIM
A4+
Dual SIM
K1+ Stereo
Dual SIM (Mini-SIM)
Type
A4+
IPS LCD
K1+ Stereo
TFT, 65K colors
Size
A4+
4.0 inches, 45.5 cm2 (~58.8% screen-to-body ratio)
K1+ Stereo
1.77 inches, 9.9 cm2 (~20.6% screen-to-body ratio)
Resolution
A4+
480 x 800 pixels, 5:3 ratio (~233 ppi density)
K1+ Stereo
128 x 160 pixels (~116 ppi density)
OS
A4+
Android 4.0 (Ice Cream Sandwich)
K1+ Stereo
-
CPU
A4+
Dual-core 1.0 GHz
K1+ Stereo
-
Card slot
A4+
microSDHC (dedicated slot)
K1+ Stereo
microSDHC (dedicated slot)
Internal
A4+
90MB
K1+ Stereo
-
Phonebook
A4+
-
K1+ Stereo
250 entries
Call records
A4+
-
K1+ Stereo
Yes
Single
A4+
3.15 MP
K1+ Stereo
VGA
Video
A4+
Yes
K1+ Stereo
Yes
Other
A4+
No
K1+ Stereo
No
Loudspeaker
A4+
Yes
K1+ Stereo
Yes
3.5mm jack
A4+
Yes
K1+ Stereo
No
WLAN
A4+
Wi-Fi 802.11 b/g/n
K1+ Stereo
No
Bluetooth
A4+
Yes
K1+ Stereo
2.0
Positioning
A4+
No
K1+ Stereo
No
NFC
A4+
No
K1+ Stereo
No
Radio
A4+
FM radio
K1+ Stereo
FM radio
USB
A4+
Proprietary
K1+ Stereo
microUSB
Sensors
A4+
Accelerometer, proximity
K1+ Stereo
Messaging
A4+
-
K1+ Stereo
SMS
Games
A4+
-
K1+ Stereo
Yes
Java
A4+
-
K1+ Stereo
Yes
Other
A4+
-
K1+ Stereo
Audio/video player Photo viewer Organizer
Type
A4+
Li-Ion 1250 mAh battery
K1+ Stereo
Li-Ion 1000 mAh, removable
Stand-by
A4+
Up to 125 h
K1+ Stereo
Up to 250 h
Talk time
A4+
Up to 5 h
K1+ Stereo
Up to 5 h
Colors
A4+
White/Black
K1+ Stereo
White/Black, Black/Red
SAR EU
A4+
0.94 W/kg (head)
K1+ Stereo
0.85 W/kg (head)
Price
A4+
About 50 EUR
K1+ Stereo
About 30 EUR