Screen size
Zenfone 8Winner: 5.9"+6.8%
Zenfone Selfie ZD551KL5.5"
Quick verdict
Zenfone 8 leads the measured specs 19-2.
Measured wins
Zenfone 8
19
spec wins
Overall winner
Ties
2
equal specs
Zenfone Selfie ZD551KL
2
spec wins
Screen size
Technology
Zenfone 8
GSM / HSPA / LTE / 5G
Zenfone Selfie ZD551KL
GSM / HSPA / LTE
2G bands
Zenfone 8
GSM 850 / 900 / 1800 / 1900
Zenfone Selfie ZD551KL
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands
Zenfone 8
HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
Zenfone Selfie ZD551KL
HSDPA 850 / 900 / 1900 / 2100
4G bands
Zenfone 8
1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 34, 38, 39, 40, 41, 42 - International, 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 25, 26, 30, 34, 38, 39, 40, 41, 42, 66, 71 - USA
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
equal specs5G support
NFC
3.5mm jack
equal specsSD card
Stereo speakers
Zenfone Selfie ZD551KL
1, 2, 3, 5, 7, 8, 20 - Global, 1, 2, 3, 5, 6, 8, 9, 18, 19, 28 - Taiwan, 1, 2, 3, 4, 5, 7, 8, 17, 20 - USA, 1, 3 - India
5G bands
Zenfone 8
1, 2, 3, 5, 7, 8, 12, 20, 28, 38, 77, 78 SA/NSA - International, 1, 2, 3, 5, 7, 8, 12, 20, 25, 38, 40, 66, 71, 77, 78 SA/NSA - USA
Zenfone Selfie ZD551KL
-
Speed
Zenfone 8
HSPA 42.2/5.76 Mbps, LTE (5CA) Cat20 2000/150 Mbps, 5G
Zenfone Selfie ZD551KL
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
Announced
Zenfone 8
2021, May 12
Zenfone Selfie ZD551KL
2015, June. Released 2015, August
Status
Zenfone 8
Available. Released 2021, May 13
Zenfone Selfie ZD551KL
Discontinued
Dimensions
Zenfone 8
148 x 68.5 x 8.9 mm (5.83 x 2.70 x 0.35 in)
Zenfone Selfie ZD551KL
156.5 x 77.2 x 10.8 mm (6.16 x 3.04 x 0.43 in)
Weight
Zenfone 8
169 g (5.96 oz)
Zenfone Selfie ZD551KL
170 g (6.00 oz)
Build
Zenfone 8
Glass front (Gorilla Glass Victus), glass back (Gorilla Glass 3), aluminum frame
Zenfone Selfie ZD551KL
Glass front (Gorilla Glass 4), plastic back, plastic frame
SIM
Zenfone 8
Nano-SIM + Nano-SIM
Zenfone Selfie ZD551KL
Dual SIM (Micro-SIM, dual stand-by)
Other
Zenfone 8
IP68 dust tight and water resistant (immersible up to 1.5m for 30 min)
Zenfone Selfie ZD551KL
-
Type
Zenfone 8
Super AMOLED, 120Hz, HDR10+, 700 nits (HBM), 1100 nits (peak)
Zenfone Selfie ZD551KL
IPS LCD
Size
Zenfone 8
5.9 inches, 84.0 cm2 (~82.9% screen-to-body ratio)
Zenfone Selfie ZD551KL
5.5 inches, 82.6 cm2 (~68.3% screen-to-body ratio)
Resolution
Zenfone 8
1080 x 2400 pixels, 20:9 ratio (~446 ppi density)
Zenfone Selfie ZD551KL
1080 x 1920 pixels, 16:9 ratio (~403 ppi density)
Protection
Zenfone 8
Corning Gorilla Glass Victus
Zenfone Selfie ZD551KL
Corning Gorilla Glass 4, oleophobic coating
OS
Zenfone 8
Android 11, upgradable to Android 13
Zenfone Selfie ZD551KL
Android 5.0 (Lollipop), upgradable to 6.0 (Marshmallow), ZenUI
Chipset
Zenfone 8
Qualcomm SM8350 Snapdragon 888 5G (5 nm)
Zenfone Selfie ZD551KL
Qualcomm MSM8939 Snapdragon 615 (28 nm)
CPU
Zenfone 8
Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55)
Zenfone Selfie ZD551KL
Octa-core (4x1.7 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53)
GPU
Zenfone 8
Adreno 660
Zenfone Selfie ZD551KL
Adreno 405
Card slot
Zenfone 8
No
Zenfone Selfie ZD551KL
microSDXC (dedicated slot)
Internal
Zenfone 8
128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM, 256GB 16GB RAM
Zenfone Selfie ZD551KL
16GB 2GB RAM, 32GB 3GB RAM
Other
Zenfone 8
UFS 3.1
Zenfone Selfie ZD551KL
eMMC 4.5
Dual
Zenfone 8
64 MP, f/1.8, 26mm (wide), 1/1.73", 0.8µm, PDAF, OIS 12 MP, f/2.2, 112˚, 14mm (ultrawide), 1/2.55", 1.4µm, dual pixel PDAF
Zenfone Selfie ZD551KL
-
Features
Zenfone 8
LED flash, HDR, panorama
Zenfone Selfie ZD551KL
Laser AF, Dual-LED dual-tone flash, panorama, HDR
Video
Zenfone 8
8K@24fps, 4K@30/60/120fps, 1080p@30/60/240fps, 720p@480fps; gyro-EIS, HDR
Zenfone Selfie ZD551KL
1080p@30fps
Single
Zenfone 8
-
Zenfone Selfie ZD551KL
13 MP, f/2.0, 28mm (wide), 1/3.0"
Single
Zenfone 8
12 MP, f/2.5, 28mm (standard), 1/2.93", 1.22µm, dual pixel PDAF
Zenfone Selfie ZD551KL
13 MP, f/2.2, 1/3.1", 1.12µm, AF
Video
Zenfone 8
4K@30fps, 1080p@30/60fps
Zenfone Selfie ZD551KL
1080p@30fps
Features
Zenfone 8
-
Zenfone Selfie ZD551KL
Dual-LED dual-tone flash
Loudspeaker
Zenfone 8
Yes, with stereo speakers
Zenfone Selfie ZD551KL
Yes
3.5mm jack
Zenfone 8
Yes
Zenfone Selfie ZD551KL
Yes
Other
Zenfone 8
32-bit/384kHz Hi-Res audio
Zenfone Selfie ZD551KL
-
WLAN
Zenfone 8
Wi-Fi 802.11 a/b/g/n/ac/6e, dual-band, Wi-Fi Direct
Zenfone Selfie ZD551KL
Wi-Fi 802.11 a/b/g/n/ac, Wi-Fi Direct, hotspot
Bluetooth
Zenfone 8
5.2, A2DP, LE, aptX HD, aptX Adaptive
Zenfone Selfie ZD551KL
4.0, A2DP, EDR
Positioning
Zenfone 8
GPS (L1+L5), GLONASS (L1), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5)
Zenfone Selfie ZD551KL
GPS, GLONASS, BDS
NFC
Zenfone 8
Yes
Zenfone Selfie ZD551KL
No
Radio
Zenfone 8
FM radio (market/region dependent)
Zenfone Selfie ZD551KL
FM radio, RDS
USB
Zenfone 8
USB Type-C 2.0, OTG
Zenfone Selfie ZD551KL
microUSB 2.0, OTG
Sensors
Zenfone 8
Fingerprint (under display, optical), accelerometer, gyro, proximity, compass
Zenfone Selfie ZD551KL
Accelerometer, gyro, proximity, compass
Type
Zenfone 8
Li-Po 4000 mAh
Zenfone Selfie ZD551KL
Li-Po 3000 mAh, removable
Charging
Zenfone 8
30W wired, PD3.0, 60% in 25 min, 100% in 80 min Reverse wired
Zenfone Selfie ZD551KL
-
Colors
Zenfone 8
Obsidian Black, Horizon Silver
Zenfone Selfie ZD551KL
Pure White, Chic Pink, Aqua Blue
Models
Zenfone 8
ZS590KS, ZS590KS-2A007EU, I006D
Zenfone Selfie ZD551KL
Z00UD, Z00UDH, Z00UDC, Z00UDB
Price
Zenfone 8
About 290 EUR
Zenfone Selfie ZD551KL
About 280 EUR