Asus Zenfone 2 (ZE551ML 64GB) vs Samsung Galaxy S2 (GT-i9100 32GB)
Side by side comparison between Asus Zenfone 2 vs Samsung Galaxy S2 phones, differences, pros, cons and full specifications. What's the better?
,
5.5"
IPS
IPS
1080x1920
13
MP
MP
5mp
4GB
RAM
RAM
Quad-core
3000
mAh
mAh
(Non removable)
vs
4.3"
AMOLED
AMOLED
480x800
8
MP
MP
2mp
1GB
RAM
RAM
Dual-core
1650
mAh
mAh
(Removable)
What's the better phone? Asus Zenfone 2 (ZE551ML 64GB)
The phonemore's choice is much more technical than personal. Therefore, you shouldn't only consider this. Our goal is to help you, but what's important to us may not be important to you. You decide which one is the best! Comment!
21 Advantages 
7 Advantages | 20 Common items in both devices |
| 16 million |
| Only digital zoom |
| Autofocus |
| Full HD (1920x1080) |
| Capacitive |
| Multitouch |
| Accelerometer |
| +13 specs and more in the table below |
Check the comparison table below for more items that are not evaluated in comparison score above.
Highlight differences Clear highlight📱 Model features | ||
| Asus Zenfone 2 (ZE551ML 64GB) | Galaxy S2 (GT-i9100 32GB) | |
| Model | Zenfone 2 (ZE551ML 64GB) | Galaxy S2 (GT-i9100 32GB) |
| Other model names | Asus Zenfone 2 ZE551ML Dual-sim (64GB + 4GB RAM) | Samsung Galaxy S2 i9100, Galaxy S II (SGS2) |
| Country or region available | feature not registered |  (Global, International) |
| Brand | Asus | Samsung |
| Release date | 3/1/2015 | 4/28/2012 |
| Depth | 10.9 millimeters (0.43 inches) | 8.49 millimeters (0.33 inches) |
| Size (width x height) | 77.2 x 152.5 millimeters (3.04 x 6 in) | 66.1 x 125.3 millimeters (2.6 x 4.93 in) |
| Weight | 170 grams (5.95 ounces) | 116 grams (4.06 ounces) |
| Build, materials | feature not registered | Plastic body, glass front |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| Asus Zenfone 2 (ZE551ML 64GB) | Galaxy S2 (GT-i9100 32GB) | |
| Display type | TFT IPS LCD | Super AMOLED Plus |
| Screen size | 5.5" inches | 4.3" inches |
| Screen-to-body ratio | ~70.8% (screen-to-body ratio) | ~63.5% (screen-to-body ratio) |
| Display resolution | 1080x1920 pixels | 480x800 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch 10-points |
| Pixel density (dot pitch) | 401 PPI | 217 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass 3 | Gorilla Glass |
| Refresh rate | feature not registered | feature not registered |
| Display features | feature not registered | feature not registered |
🤖 Operating System | ||
| Asus Zenfone 2 (ZE551ML 64GB) | Galaxy S2 (GT-i9100 32GB) | |
| System version | Android 5.0 Lollipop | Android 2.3.4 Gingerbread |
| Firmware update | Android 6.0 Marshmallow | Android 4.1.2 Jelly Bean |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| Asus Zenfone 2 (ZE551ML 64GB) | Galaxy S2 (GT-i9100 32GB) | |
| Chipset | 64bit: Intel Atom Z3580 | 32bit: Samsung Exynos 4 Dual 4210 (45nm) |
| CPU | Quad-core, 1 processor: 4x 2.3GHz Intel Silvermont (Quad-core) | Dual-core, 1 processor: 2x 1.2GHz ARM Cortex-A9 (Dual-core) |
| GPU graphical controller | PowerVR G6430 MP4 | ARM Mali-400 MP4 266Mhz |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Asus Zenfone 2 (ZE551ML 64GB) | Galaxy S2 (GT-i9100 32GB) | |
| RAM memory | 4GB LPDDR3 | 1GB LPDDR2 |
| Internal storage | 64GB (60GB available) | 32GB (28GB available) |
| External storage | Until 64GB microSD, microSDXC (dedicated slot) | Until 32GB microSD, microSDHC (dedicated slot) |
📶 Mobile networks | ||
| Asus Zenfone 2 (ZE551ML 64GB) | Galaxy S2 (GT-i9100 32GB) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card (dedicated slot) | Not supported |
| SIM card | 2 slots (Dual-SIM) micro-SIM (3FF) | 1 slot (Single-SIM) Standard mini-SIM (2FF) |
| Maximum Download / Upload | 150/50 Mbps | 21/5.76 Mbps |
| Network technology | 2G, 3G, 4G | 2G, 3G |
| Frequency, bands | Expand band details Collapse details | |
| GSM MHz band | Quad-Band 850/900/1800/1900 | Quad-Band 850/900/1800/1900 |
| Primary 2G network | GSM 850/900/1800/1900 | GSM 850/900/1800/1900 |
| Primary 3G network | UMTS 850/900/1900/2100 | UMTS 850/900/1900/2100 |
| Primary 4G network | LTE Cat4 800/850/900/1700/1800/1900/2100/2600 Bands (1,2,3,4,5,7,8,20) - USA: 700/800/850/900/1700/1800/1900/2100/2600 (Bands 1,2,3,4,5,7,8,17,20) | Not supported |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+ |
| Secondary 2G network | GSM 850/900/1800/1900 | Not supported |
| Secondary 3G network | Not supported | Not supported |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | GPRS, EDGE | Not supported |
📷 Camera | ||
| Asus Zenfone 2 (ZE551ML 64GB) | Galaxy S2 (GT-i9100 32GB) | |
| Back camera (main camera) | 13 megapixels | 8 megapixels |
| Main camera resolution | 4128x3096 pixels | 3264x2448 pixels |
| Video recording (primary) | Full HD (1920x1080) 30 fps | Full HD (1920x1080) 30 fps |
| Flash | Dual-LED flash | LED flash |
| Focal aperture | f/2.0 (aperture) | f/2.6 (aperture) |
| Focal length | feature not registered | feature not registered |
| Sensor size | feature not registered | 1/3.2" inches |
| Pixel size | feature not registered | feature not registered |
| Autofocus | Autofocus | Autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | feature not registered | EIS: Digital stabilization |
| Zoom | Only digital zoom | Only digital zoom |
| Face/smile detection | Face detection, Smile detection | Face detection, Smile detection |
| BSI sensor | Not supported | Supported |
| HDR | HDR photo only main camera | Not supported |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| Asus Zenfone 2 (ZE551ML 64GB) | Galaxy S2 (GT-i9100 32GB) | |
| Front camera (secondary) | 5 megapixels | 2 megapixels |
| Front camera resolution | 2560x1920 pixels | 1600x1200 pixels |
| Video recording (secondary) | HD (1280x720) | VGA (640x480) |
| Front flash | Not supported | Not supported |
| Focal aperture | feature not registered | feature not registered |
| Focal length | feature not registered | feature not registered |
| Sensor size | feature not registered | feature not registered |
| Pixel size | feature not registered | feature not registered |
🔉 Sound and multimedia | ||
| Asus Zenfone 2 (ZE551ML 64GB) | Galaxy S2 (GT-i9100 32GB) | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | Not supported | 2 microphones or more |
| Radio | FM (RDS) | FM (RDS) |
| TV | Not supported | Not supported |
| Video formats | MP4, H.264, H.263 | MP4, H.264, H.263, DivX, XviD, WMV |
| Audio formats | MP3, WAV, eAAC+ | MP3, WAV, eAAC+, AC3, FLAC |
🔌 Connectivity | ||
| Asus Zenfone 2 (ZE551ML 64GB) | Galaxy S2 (GT-i9100 32GB) | |
| USB | MicroUSB 2.0 | MicroUSB 2.0 |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | Not supported | Micro-B USB MHL |
| Bluetooth | 4.0 + A2DP | 3.0 + A2DP |
| WiFi | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) WiFi Direct, hotspot | 802.11 a/b/g/n [wifi4] (2.4GHz, 5GHz) WiFi Direct, hotspot |
| DLNA | Not supported | Supported |
| GPS | A-GPS, GeoTagging, GLONASS | A-GPS, GeoTagging |
| NFC | Supported | Supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Asus Zenfone 2 (ZE551ML 64GB) | Galaxy S2 (GT-i9100 32GB) | |
| Sensors | Accelerometer Ambient light sensor Compass Gyroscope Proximity sensor | Accelerometer Ambient light sensor Compass Gyroscope Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Asus Zenfone 2 (ZE551ML 64GB) | Galaxy S2 (GT-i9100 32GB) | |
| Battery type | LiPo: li-ion polymer (Non removable) | Li-Ion: lithium-ion (Removable) |
| Battery capacity | 3000 mAh | 1650 mAh |
| Charger, watts | Wired charging | Wired charging |
| Inductive / wireless charging | feature not registered | feature not registered |
| Talk time autonomy | feature not registered | 8.7 hours |
| Standby | feature not registered | 600 hours (25 days) |
➕ Other features | ||
| Asus Zenfone 2 (ZE551ML 64GB) | Galaxy S2 (GT-i9100 32GB) | |
| Call control | Voice dialing, Voice recorder | Voice dialing, Voice recorder, Voice commands |
| Messaging | SMS (T9), MMS, E-mail, Push mail | SMS (Swype), MMS, E-mail, Push mail |
| Hands-free calling | Supported | Supported |
| Video calling | Supported | Supported |
| Ringtones | Polyphonic and customized | Polyphonic and customized |
| Web browser | HTML, XHTML, HTML5 | HTML, XHTML, Flash player |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • Colors: Black, Gold, Gray, Red, White • Asus ZenUI • Fast battery charging: 60% in 40min • 5GB free ASUS WebStorage • OpenGL 3.0 • Asus BoostMaster 18W adapter included | • Colors: Black, White, Pink • Samsung TouchWiz UI 4.0 • Java framework |
☢️ Radiation rate | ||
| Asus Zenfone 2 (ZE551ML 64GB) | Galaxy S2 (GT-i9100 32GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | 0.16W/kg (head), 0.96W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | 0.34W/kg (head) |