Screen size
A31 (2015)4.5"
A6xWinner: 6.8"+33%
Quick verdict
A6x leads the measured specs 15-2.
Measured wins
A31 (2015)
2
spec wins
Ties
4
equal specs
A6x
15
spec wins
Overall winner
Screen size
Technology
A31 (2015)
GSM / LTE
A6x
GSM / HSPA / LTE / 5G
2G bands
A31 (2015)
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
A6x
GSM 850 / 900 / 1800 / 1900
3G bands
A31 (2015)
TD-SCDMA
A6x
HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
A31 (2015)
38, 39, 40, 41
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
Main camera
Front camera
equal specsBattery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
equal specs5G support
NFC
3.5mm jack
equal specsSD card
equal specsStereo speakers
A6x
1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 26, 28, 38, 39, 40, 41, 42, 48, 66, 71
Speed
A31 (2015)
TD-SCDMA, LTE Cat4 150/50 Mbps
A6x
HSPA, LTE, 5G
GPRS
A31 (2015)
Yes
A6x
-
EDGE
A31 (2015)
Yes
A6x
-
5G bands
A31 (2015)
-
A6x
1, 2, 3, 5, 7, 8, 12, 20, 26, 28, 38, 40, 41, 48, 66, 71, 77, 78 SA/NSA
Announced
A31 (2015)
2015, April. Released 2015, April 17
A6x
2026, January 13
Status
A31 (2015)
Discontinued
A6x
Available. Released 2026, January 13
Dimensions
A31 (2015)
131.9 x 65.5 x 8 mm (5.19 x 2.58 x 0.31 in)
A6x
166.6 x 78.5 x 8.6 mm (6.56 x 3.09 x 0.34 in)
Weight
A31 (2015)
135 g (4.76 oz)
A6x
212 g (7.48 oz)
SIM
A31 (2015)
Nano-SIM + Micro-SIM
A6x
Nano-SIM + Nano-SIM
Build
A31 (2015)
-
A6x
Glass front, plastic frame, plastic back
Other
A31 (2015)
-
A6x
IP64 dust tight and water resistant (water splashes)
Type
A31 (2015)
IPS LCD
A6x
IPS LCD, 120Hz, 1125 nits (peak)
Size
A31 (2015)
4.5 inches, 55.8 cm2 (~64.6% screen-to-body ratio)
A6x
6.75 inches, 111.4 cm2 (~85.2% screen-to-body ratio)
Resolution
A31 (2015)
480 x 854 pixels, 16:9 ratio (~218 ppi density)
A6x
720 x 1570 pixels, 19.5:9 ratio (~256 ppi density)
OS
A31 (2015)
Android 4.4 (KitKat)
A6x
Android 15, ColorOS 15
Chipset
A31 (2015)
Qualcomm MSM8916 Snapdragon 410 (28 nm)
A6x
Mediatek Dimensity 6300 (6 nm)
CPU
A31 (2015)
Quad-core 1.2 GHz Cortex-A53
A6x
Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
GPU
A31 (2015)
Adreno 306
A6x
Mali-G57 MC2
Card slot
A31 (2015)
microSDXC (dedicated slot)
A6x
microSDXC
Internal
A31 (2015)
8GB 1GB RAM
A6x
128GB 4GB RAM, 128GB 6GB RAM, 256GB 4GB RAM, 256GB 6GB RAM, 256GB 8GB RAM
Other
A31 (2015)
eMMC 4.5
A6x
UFS 2.2
Single
A31 (2015)
8 MP, AF
A6x
-
Features
A31 (2015)
LED flash
A6x
LED flash, HDR, panorama
Video
A31 (2015)
1080p@30fps
A6x
1080p@30/60fps
Dual
A31 (2015)
-
A6x
50 MP, f/1.8, (wide), PDAF Auxiliary lens
Single
A31 (2015)
5 MP
A6x
5 MP, f/2.2, (wide)
Video
A31 (2015)
A6x
1080p@30fps
Features
A31 (2015)
-
A6x
Panorama
Loudspeaker
A31 (2015)
Yes
A6x
Yes
3.5mm jack
A31 (2015)
Yes
A6x
Yes
WLAN
A31 (2015)
Wi-Fi 802.11 b/g/n
A6x
Wi-Fi 802.11 a/b/g/n/ac, dual-band
Bluetooth
A31 (2015)
4.0, A2DP
A6x
5.4, A2DP, LE, aptX HD
Positioning
A31 (2015)
GPS
A6x
GPS, GALILEO, GLONASS, QZSS
NFC
A31 (2015)
No
A6x
Yes (market/region dependent)
Radio
A31 (2015)
No
A6x
Unspecified
USB
A31 (2015)
microUSB 2.0
A6x
USB Type-C 2.0, OTG
Sensors
A31 (2015)
Accelerometer, proximity
A6x
Fingerprint (side-mounted), accelerometer, proximity, compass
Type
A31 (2015)
Li-Ion 2000 mAh, non-removable
A6x
6500 mAh
Stand-by
A31 (2015)
Up to 240 h
A6x
-
Talk time
A31 (2015)
Up to 7 h
A6x
-
Charging
A31 (2015)
-
A6x
Wired 5W reverse wired
Colors
A31 (2015)
White, Blue
A6x
Plum Purple, Violet Purple
Price
A31 (2015)
About 150 EUR
A6x
-
Models
A31 (2015)
-
A6x
CPH2783