Screen size
A6s 4GWinner: 6.8"+5.2%
A916.4"
Quick verdict
A6s 4G leads the measured specs 12-5.
Measured wins
A6s 4G
12
spec wins
Overall winner
Ties
5
equal specs
A91
5
spec wins
Screen size
Technology
A6s 4G
GSM / HSPA / LTE
A91
GSM / CDMA / HSPA / LTE
2G bands
A6s 4G
GSM 850 / 900 / 1800 / 1900
A91
GSM 850 / 900 / 1800 / 1900 , CDMA 800 & TD-SCDMA
3G bands
A6s 4G
HSDPA 850 / 900 / 2100 - version 1, HSDPA 900 / 2100 - version 2
A91
HSDPA 850 / 1700(AWS) / 1900 / 2100 - International, HSDPA 850 / 900 / 2100 - Southeast Asia
4G bands
A6s 4G
1, 3, 5, 7, 8, 20, 28, 38, 40, 41 - version 1, 1, 3, 5, 8, 40 - version 2
Resolution
Refresh rate
Peak brightness
Pixel density
CPU speed
RAM
Storage
equal specsMain camera
Front camera
equal specsBattery
Wired charging
Weight
Thickness
IP rating
Wi‑Fi
Bluetooth
USB
equal specs5G support
equal specsNFC
3.5mm jack
SD card
equal specsStereo speakers
A91
1, 3, 5, 7, 8, 20, 28, 38, 40, 41 - International, 1, 3, 5, 7, 8, 38, 40, 41, 1, 3, 5, 8, 38, 40, 41 - Southeast Asia, 1, 3, 4, 5, 8, 34, 38, 39, 40, 41 - China
Speed
A6s 4G
HSPA, LTE
A91
HSPA, LTE
Announced
A6s 4G
2026, January 09
A91
2019, December 20. Released 2019, December
Status
A6s 4G
Available. Released 2026, January 09
A91
Discontinued
Dimensions
A6s 4G
166.6 x 78.5 x 8.6 mm (6.56 x 3.09 x 0.34 in)
A91
160.2 x 73.3 x 7.9 mm (6.31 x 2.89 x 0.31 in)
Weight
A6s 4G
215 g (7.58 oz)
A91
172 g (6.07 oz)
Build
A6s 4G
Glass front, plastic frame, plastic back
A91
Glass front (Gorilla Glass 5), plastic back, plastic frame
SIM
A6s 4G
Nano-SIM + Nano-SIM
A91
Nano-SIM + Nano-SIM
Other
A6s 4G
IP68/IP69 dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min)
A91
-
Type
A6s 4G
IPS LCD, 120Hz, 1125 nits (peak)
A91
AMOLED, 430 nits (typ)
Size
A6s 4G
6.75 inches, 111.4 cm2 (~85.2% screen-to-body ratio)
A91
6.4 inches, 100.4 cm2 (~85.5% screen-to-body ratio)
Resolution
A6s 4G
720 x 1570 pixels, 19.5:9 ratio (~256 ppi density)
A91
1080 x 2400 pixels, 20:9 ratio (~408 ppi density)
Protection
A6s 4G
-
A91
Corning Gorilla Glass 5
OS
A6s 4G
Android 15, ColorOS 15
A91
Android 9.0 (Pie), upgradable to Android 11, ColorOS 11
Chipset
A6s 4G
Qualcomm SM6225 Snapdragon 685 (6 nm)
A91
Mediatek MT6771V Helio P70 (12 nm)
CPU
A6s 4G
Octa-core (4x2.8 GHz Cortex-A73 & 4x1.9 GHz Cortex-A53)
A91
Octa-core (4x2.1 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53)
GPU
A6s 4G
Adreno 610
A91
Mali-G72 MP3
Card slot
A6s 4G
microSDXC
A91
microSDXC (dedicated slot)
Internal
A6s 4G
128GB 8GB RAM, 256GB 8GB RAM
A91
128GB 4GB RAM, 128GB 8GB RAM, 256GB 8GB RAM
Other
A6s 4G
UFS 2.2
A91
UFS 2.1
Dual
A6s 4G
50 MP, f/1.8, (wide), PDAF Auxiliary lens
A91
-
Features
A6s 4G
LED flash, HDR, panorama
A91
LED flash, HDR, panorama
Video
A6s 4G
1080p@30fps
A91
1080p@30fps, gyro-EIS
Quad
A6s 4G
-
A91
48 MP, f/1.8, 26mm (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.3, 119˚ (ultrawide), 1/4.0", 1.12µm 2 MP B/W, f/2.4, 1/5.0", 1.75µm Auxiliary lens
Single
A6s 4G
16 MP, f/2.4, (wide)
A91
16 MP, f/2.0, 26mm (wide), 1/3.06", 1.0µm
Features
A6s 4G
Panorama
A91
HDR
Video
A6s 4G
1080p@30fps
A91
1080p@30fps
Loudspeaker
A6s 4G
Yes, with stereo speakers
A91
Yes
3.5mm jack
A6s 4G
No
A91
Yes
WLAN
A6s 4G
Wi-Fi 802.11 a/b/g/n/ac, dual-band
A91
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Bluetooth
A6s 4G
5.0, A2DP, LE, aptX
A91
4.2, A2DP, LE
Positioning
A6s 4G
GPS, GALILEO, GLONASS, QZSS
A91
GPS, GLONASS, BDS
NFC
A6s 4G
Yes (market/region dependent)
A91
No
Radio
A6s 4G
Unspecified
A91
FM radio
USB
A6s 4G
USB Type-C 2.0, OTG
A91
USB Type-C 2.0, OTG
Sensors
A6s 4G
Fingerprint (side-mounted), accelerometer, proximity, compass
A91
Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
Type
A6s 4G
Si/C Li-Ion 7000 mAh
A91
Li-Po 4025 mAh, non-removable
Charging
A6s 4G
80W wired, 33W PPS, 13.5W PD, 56% in 30 min 5W reverse wired
A91
20W wired, 50% in 30 min
Colors
A6s 4G
Cappuccino Brown, Ice White
A91
Lightening Black, Unicorn White, Blazing Blue, Red
Models
A6s 4G
CPH2815
A91
PCPM00, CPH2001, CPH2021
Price
A6s 4G
-
A91
About 200 EUR