Screen size
A18002.4"
Signature 27Winner: 6.8"+65%
Quick verdict
Signature 27 leads the measured specs 18-3.
Measured wins
A1800
3
spec wins
Ties
1
equal specs
Signature 27
18
spec wins
Overall winner
Screen size
Technology
A1800
GSM
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GSM / HSPA / LTE / 5G
2G bands
A1800
GSM 900 / 1800 / 1900 / CDMA 800
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GSM 850 / 900 / 1800 / 1900
GPRS
A1800
Class 10
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-
EDGE
A1800
No
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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
A1800
-
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HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
A1800
-
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LTE
5G bands
A1800
-
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SA/NSA/Sub6
Speed
A1800
-
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HSPA, LTE, 5G
Announced
A1800
2008, June. Released 2009, May
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2026, September 22
Status
A1800
Discontinued
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Coming soon. Exp. release 2026, Oct-Nov
Dimensions
A1800
95.3 x 52.5 x 25 mm, 101 cc (3.75 x 2.07 x 0.98 in)
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-
Weight
A1800
132 g (4.66 oz)
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-
SIM
A1800
Mini-SIM
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Nano-SIM + Nano-SIM
Build
A1800
-
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Glass front (Gorilla Glass Victus 2), aluminum frame
Other
A1800
-
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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
A1800
TFT resistive touchscreen, 256K colors
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LTPO AMOLED, 1B colors, 165Hz, Dolby Vision, HDR10+
Size
A1800
2.4 inches, 17.8 cm2 (~35.7% screen-to-body ratio)
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6.8 inches, 112.4 cm2
Resolution
A1800
240 x 320 pixels, 4:3 ratio (~167 ppi density)
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1264 x 2780 pixels (~449 ppi density)
Other
A1800
Handwriting and speech recognition (Chi & Eng)
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-
Protection
A1800
-
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Corning Gorilla Glass Victus 2
OS
A1800
Linux
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Android 17, up to 7 major OS updates
Chipset
A1800
-
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Qualcomm SM8975 Snapdragon 8 Elite Extreme Gen 6 (2 nm)
CPU
A1800
-
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Octa-core (2x5.01 GHz Prime + 3x4.03 GHz Performance + 3x3.74 GHz Performance)
GPU
A1800
-
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Adreno 850
Card slot
A1800
microSDHC (dedicated slot)
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No
Internal
A1800
-
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256GB 12GB RAM, 512GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM
Other
A1800
-
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UFS 4.1
Single
A1800
3.15 MP, AF
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-
Video
A1800
Yes
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8K@30fps (Dolby Vision), 4K@30/60fps (Dolby Vision), 4K@120fps, 1080p@30/60/120/240fps, 10-bit HDR10+, gyro-EIS
Triple
A1800
-
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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
Features
A1800
-
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Dual-LED flash, HDR, panorama
Other
A1800
No
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-
Single
A1800
-
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50 MP, f/2.0, 21mm (wide), 1/2.93", 0.6µm, dual-pixel PDAF
Features
A1800
-
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HDR
Video
A1800
-
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4K@30/60fps, 1080p@30/60/120/240fps, HDR
Loudspeaker
A1800
Yes
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Yes, with stereo speakers (with Dolby Atmos)
Alert types
A1800
Vibration; Downloadable polyphonic, MP3 ringtones
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-
3.5mm jack
A1800
No
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No
Other
A1800
-
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24-bit/192kHz Hi-Res & Hi-Res Wireless audio Sound by Bang & Olufsen
WLAN
A1800
No
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Wi-Fi 802.11 a/b/g/n/ac/6e/7, tri-band, Wi-Fi Direct
Bluetooth
A1800
2.0, A2DP
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6.0, A2DP, LE
Positioning
A1800
GPS, A-GPS
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GPS, GLONASS, GALILEO, BDS, NavIC
Radio
A1800
Stereo FM radio
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No
USB
A1800
microUSB 2.0
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USB Type-C 3.1 Gen2, OTG, DisplayPort 1.4
NFC
A1800
-
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Yes
Sensors
A1800
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Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass
Browser
A1800
WAP 2.0/xHTML, HTML
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-
Other
A1800
MP3/WAV/WMA/AAC+ player Organizer Document viewer (Word, Excel, PowerPoint, PDF) Business card scanner Photo editor Voice dial/memo
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Smart Connect (Ready For) support Ultra Wideband (UWB) support
Type
A1800
Removable Li-Ion 1000 mAh battery (BC70)
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Si/C Li-Ion 7000 mAh
Stand-by
A1800
Up to 110 h
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-
Talk time
A1800
Up to 5 h
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-
Charging
A1800
-
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90W wired 50W wireless 10W reverse wireless 5W reverse wired
Colors
A1800
Black
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Pantone: Coal Smoke, Capulet Olive
SAR
A1800
1.26 W/kg (head) 0.64 W/kg (body)
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-
SAR EU
A1800
1.68 W/kg (head)
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-
Price
A1800
About 120 EUR
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-