Screen size
A8402.2"
Signature 27Winner: 6.8"+68%
Quick verdict
Signature 27 leads the measured specs 18-3.
Measured wins
A840
3
spec wins
Ties
1
equal specs
Signature 27
18
spec wins
Overall winner
Screen size
Technology
A840
GSM
Signature 27
GSM / HSPA / LTE / 5G
2G bands
A840
GSM 900 / 1800
Signature 27
GSM 850 / 900 / 1800 / 1900
GPRS
A840
Class 10
Signature 27
-
EDGE
A840
No
Signature 27
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
NFC
3.5mm jack
equal specsSD card
Stereo speakers
-
3G bands
A840
-
Signature 27
HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
A840
-
Signature 27
LTE
5G bands
A840
-
Signature 27
SA/NSA/Sub6
Speed
A840
-
Signature 27
HSPA, LTE, 5G
Announced
A840
2004, Q1
Signature 27
2026, September 22
Status
A840
Discontinued
Signature 27
Coming soon. Exp. release 2026, Oct-Nov
Dimensions
A840
94 x 49 x 24 mm (3.70 x 1.93 x 0.94 in)
Signature 27
-
Weight
A840
115 g (4.06 oz)
Signature 27
-
SIM
A840
Mini-SIM
Signature 27
Nano-SIM + Nano-SIM
Build
A840
-
Signature 27
Glass front (Gorilla Glass Victus 2), aluminum frame
Other
A840
-
Signature 27
IP68/IP69 dust tight and water resistant (high pressure water jets; immersible up to 1.2m for 30 min) MIL-STD-810H compliant* * does not guarantee ruggedness or use in extreme conditions
Type
A840
TFT, 256K colors
Signature 27
LTPO AMOLED, 1B colors, 165Hz, Dolby Vision, HDR10+
Size
A840
2.2 inches, 35 x 44 mm, 15.2 cm2 (~33.1% screen-to-body ratio)
Signature 27
6.8 inches, 112.4 cm2
Resolution
A840
176 x 220 pixels (~128 ppi density)
Signature 27
1264 x 2780 pixels (~449 ppi density)
Other
A840
Second external 4096 colors display (96 x 64 pixels) Downloadable images
Signature 27
-
Protection
A840
-
Signature 27
Corning Gorilla Glass Victus 2
Card slot
A840
microSD (dedicated slot)
Signature 27
No
Phonebook
A840
500 entries, Photo call
Signature 27
-
Call records
A840
Yes
Signature 27
-
Internal
A840
-
Signature 27
256GB 12GB RAM, 512GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM
Other
A840
-
Signature 27
UFS 4.1
Single
A840
1.3 MP
Signature 27
-
Features
A840
LED flash
Signature 27
Dual-LED flash, HDR, panorama
Video
A840
Yes
Signature 27
8K@30fps (Dolby Vision), 4K@30/60fps (Dolby Vision), 4K@120fps, 1080p@30/60/120/240fps, 10-bit HDR10+, gyro-EIS
Triple
A840
-
Signature 27
50 MP, (wide), 1/1.28", 1.22µm, PDAF, OIS 200 MP, (periscope telephoto), PDAF, OIS, 5x optical zoom 50 MP, f/2.0, 12mm, 122˚ (ultrawide), 1/2.76", 0.64µm, PDAF
Other
A840
No
Signature 27
-
Single
A840
-
Signature 27
50 MP, f/2.0, 21mm (wide), 1/2.93", 0.6µm, dual-pixel PDAF
Features
A840
-
Signature 27
HDR
Video
A840
-
Signature 27
4K@30/60fps, 1080p@30/60/120/240fps, HDR
Loudspeaker
A840
Yes
Signature 27
Yes, with stereo speakers (with Dolby Atmos)
Alert types
A840
Vibration; Downloadable polyphonic, MP3 ringtones
Signature 27
-
3.5mm jack
A840
No
Signature 27
No
Other
A840
-
Signature 27
24-bit/192kHz Hi-Res & Hi-Res Wireless audio Sound by Bang & Olufsen
WLAN
A840
No
Signature 27
Wi-Fi 802.11 a/b/g/n/ac/6e/7, tri-band, Wi-Fi Direct
Bluetooth
A840
No
Signature 27
6.0, A2DP, LE
Positioning
A840
GPS
Signature 27
GPS, GLONASS, GALILEO, BDS, NavIC
Radio
A840
No
Signature 27
No
USB
A840
Signature 27
USB Type-C 3.1 Gen2, OTG, DisplayPort 1.4
NFC
A840
-
Signature 27
Yes
Sensors
A840
Signature 27
Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass
Messaging
A840
SMS, EMS, MMS, Email, Instant Messaging
Signature 27
-
Browser
A840
WAP 2.0/xHTML
Signature 27
-
Games
A840
Yes
Signature 27
-
Java
A840
Yes
Signature 27
-
Other
A840
MP3/MP4 player Organizer Predictive text input
Signature 27
Smart Connect (Ready For) support Ultra Wideband (UWB) support
Type
A840
Removable Li-Ion battery
Signature 27
Si/C Li-Ion 7000 mAh
Stand-by
A840
Up to 160 h
Signature 27
-
Talk time
A840
Up to 3 h
Signature 27
-
Charging
A840
-
Signature 27
90W wired 50W wireless 10W reverse wireless 5W reverse wired
Colors
A840
Signature 27
Pantone: Coal Smoke, Capulet Olive
OS
A840
-
Signature 27
Android 17, up to 7 major OS updates
Chipset
A840
-
Signature 27
Qualcomm SM8975 Snapdragon 8 Elite Extreme Gen 6 (2 nm)
CPU
A840
-
Signature 27
Octa-core (2x5.01 GHz Prime + 3x4.03 GHz Performance + 3x3.74 GHz Performance)
GPU
A840
-
Signature 27
Adreno 850