Screen size
Zenfone 2 ZE551ML5.5"
Zenfone 9Winner: 5.9"+6.8%
Quick verdict
Zenfone 9 leads the measured specs 19-2.
Measured wins
Zenfone 2 ZE551ML
2
spec wins
Ties
2
equal specs
Zenfone 9
19
spec wins
Overall winner
Screen size
Technology
Zenfone 2 ZE551ML
GSM / HSPA / LTE
Zenfone 9
GSM / HSPA / LTE / 5G
2G bands
Zenfone 2 ZE551ML
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
Zenfone 9
GSM 850 / 900 / 1800 / 1900
3G bands
Zenfone 2 ZE551ML
HSDPA 850 / 900 / 1900 / 2100 , TD-SCDMA - China & India
Zenfone 9
HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands
Zenfone 2 ZE551ML
1, 2, 3, 4, 5, 8, 9, 18, 19, 28 - Taiwan, 1, 2, 3, 4, 5, 7, 8, 20 - Global, 1, 2, 3, 4, 5, 7, 8, 17, 20 - US, 1, 3, 38, 39, 40, 41 - China & India
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
equal specs3.5mm jack
equal specsSD card
Stereo speakers
Zenfone 9
1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 34, 38, 39, 40, 41, 42 - A version, 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 34, 38, 39, 40, 41, 42 - B version, 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 25, 26, 28, 30, 34, 38, 39, 40, 41, 42, 66, 71 - C version
Speed
Zenfone 2 ZE551ML
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
Zenfone 9
HSPA 42.2/5.76 Mbps, LTE (5CA) Cat20 2000/211 Mbps, 5G 4.5/0.9 Gbps
5G bands
Zenfone 2 ZE551ML
-
Zenfone 9
1, 2, 3, 5, 7, 8, 12, 20, 28, 38, 77, 78 - A version, 1, 2, 3, 5, 7, 8, 12, 20, 28, 38, 41, 77, 78 - B version, 1, 2, 3, 5, 7, 8, 12, 20, 25, 28, 38, 40, 41, 66, 71, 77, 78 - C version
Announced
Zenfone 2 ZE551ML
2015, January. Released 2015, March
Zenfone 9
2022, July 28
Status
Zenfone 2 ZE551ML
Discontinued
Zenfone 9
Available. Released 2022, September 15
Dimensions
Zenfone 2 ZE551ML
152.5 x 77.2 x 10.9 mm (6.00 x 3.04 x 0.43 in)
Zenfone 9
146.5 x 68.1 x 9.1 mm (5.77 x 2.68 x 0.36 in)
Weight
Zenfone 2 ZE551ML
170 g (6.00 oz)
Zenfone 9
169 g (5.96 oz)
Build
Zenfone 2 ZE551ML
Glass front (Gorilla Glass 3), plastic back, plastic frame
Zenfone 9
Glass front (Gorilla Glass Victus), plastic back, aluminum frame
SIM
Zenfone 2 ZE551ML
Dual SIM (Micro-SIM, dual stand-by)
Zenfone 9
Nano-SIM + Nano-SIM
Other
Zenfone 2 ZE551ML
-
Zenfone 9
IP68 dust tight and water resistant (immersible up to 1.5m for 30 min)
Type
Zenfone 2 ZE551ML
IPS LCD
Zenfone 9
Super AMOLED, 120Hz, HDR10+, 1100 nits (peak)
Size
Zenfone 2 ZE551ML
5.5 inches, 83.4 cm2 (~70.8% screen-to-body ratio)
Zenfone 9
5.9 inches, 84.4 cm2 (~84.6% screen-to-body ratio)
Resolution
Zenfone 2 ZE551ML
1080 x 1920 pixels, 16:9 ratio (~401 ppi density)
Zenfone 9
1080 x 2400 pixels, 20:9 ratio (~445 ppi density)
Protection
Zenfone 2 ZE551ML
Corning Gorilla Glass 3
Zenfone 9
Corning Gorilla Glass Victus
OS
Zenfone 2 ZE551ML
Android 5.0 (Lollipop), upgradable to 6.0 (Marshmallow)
Zenfone 9
Android 12, upgradable to Android 14
Chipset
Zenfone 2 ZE551ML
Intel Atom Z3580 (4 GB RAM model)Intel Atom Z3560 (2 GB RAM model)
Zenfone 9
Qualcomm SM8475 Snapdragon 8+ Gen 1 (4 nm)
CPU
Zenfone 2 ZE551ML
Quad-core 2.3 GHz (4 GB RAM model)Quad-core 1.8 GHz (2 GB RAM model)
Zenfone 9
Octa-core (1x3.19 GHz Cortex-X2 & 3x2.75 GHz Cortex-A710 & 4x1.80 GHz Cortex-A510)
GPU
Zenfone 2 ZE551ML
PowerVR G6430
Zenfone 9
Adreno 730
Card slot
Zenfone 2 ZE551ML
microSDXC (dedicated slot)
Zenfone 9
No
Internal
Zenfone 2 ZE551ML
16GB 2GB RAM, 32GB 2GB RAM, 32GB 4GB RAM, 64GB 4GB RAM, 128GB 4GB RAM
Zenfone 9
128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM, 256GB 16GB RAM
Other
Zenfone 2 ZE551ML
-
Zenfone 9
UFS 3.1
Single
Zenfone 2 ZE551ML
13 MP, f/2.0, AF
Zenfone 9
-
Features
Zenfone 2 ZE551ML
Dual-LED dual-tone flash, panorama, HDR
Zenfone 9
LED flash, HDR, panorama
Video
Zenfone 2 ZE551ML
1080p@30fps
Zenfone 9
8K@24fps, 4K@30/60/120fps, 1080p@30/60/240fps; gyro-EIS, HDR
Dual
Zenfone 2 ZE551ML
-
Zenfone 9
50 MP, f/1.9, 24mm (wide), 1/1.56", 1.0µm, multi-directional PDAF, gimbal OIS 12 MP, f/2.2, 14mm, 113° (ultrawide), 1/2.55", 1.4µm, dual pixel PDAF
Single
Zenfone 2 ZE551ML
5 MP, f/2.0
Zenfone 9
12 MP, f/2.5, 28mm (standard), 1/2.93", 1.22µm, dual pixel PDAF
Video
Zenfone 2 ZE551ML
Zenfone 9
4K@30fps, 1080p@30/60fps
Loudspeaker
Zenfone 2 ZE551ML
Yes
Zenfone 9
Yes, with stereo speakers
3.5mm jack
Zenfone 2 ZE551ML
Yes
Zenfone 9
Yes
Other
Zenfone 2 ZE551ML
-
Zenfone 9
24-bit/192kHz Hi-Res audio Snapdragon Sound
WLAN
Zenfone 2 ZE551ML
Wi-Fi 802.11 a/b/g/n/ac, Wi-Fi Direct, hotspot
Zenfone 9
Wi-Fi 802.11 a/b/g/n/ac/6e, dual-band, Wi-Fi Direct
Bluetooth
Zenfone 2 ZE551ML
4.0, A2DP, EDR
Zenfone 9
5.2, A2DP, LE, aptX HD, aptX Adaptive, aptX Lossless
Positioning
Zenfone 2 ZE551ML
GPS, GLONASS
Zenfone 9
GPS (L1+L5), GLONASS (L1), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5)
NFC
Zenfone 2 ZE551ML
Yes
Zenfone 9
Yes
Radio
Zenfone 2 ZE551ML
FM radio, RDS
Zenfone 9
No
USB
Zenfone 2 ZE551ML
microUSB 2.0, OTG
Zenfone 9
USB Type-C, OTG
Sensors
Zenfone 2 ZE551ML
Accelerometer, gyro, proximity, compass
Zenfone 9
Fingerprint (side-mounted), accelerometer, gyro, proximity, compass
Type
Zenfone 2 ZE551ML
Li-Po 3000 mAh, non-removable
Zenfone 9
Li-Po 4300 mAh
Charging
Zenfone 2 ZE551ML
18W wired, 60% in 40 min
Zenfone 9
30W wired, PD3.0, PPS, QC4 5W reverse wired
Colors
Zenfone 2 ZE551ML
Osmium Black, Sheer Gold, Glacier Gray, Glamor Red, Ceramic White
Zenfone 9
Starry Blue, Moonlight White, Sunset Red, Midnight Black
Models
Zenfone 2 ZE551ML
Z00AD, Z00A
Zenfone 9
AI2202-1A006EU, AI2202, AI2202_B
SAR EU
Zenfone 2 ZE551ML
0.35 W/kg (head)
Zenfone 9
-
Price
Zenfone 2 ZE551ML
About 300 EUR
Zenfone 9
£ 895.00 / € 560.12