Asus Zenfone 4 (ZE554KL 64GB/4GB NFC) vs Samsung Galaxy S2 LTE (SGH-i727R)
Side by side comparison between Asus Zenfone 4 vs Samsung Galaxy S2 LTE phones, differences, pros, cons and full specifications. What's the better?
,
5.5"
IPS
IPS
1080x1920
12.2
MP
MP
8mp
4GB
RAM
RAM
Octa-core
3300
mAh
mAh
(Non removable)
vs
4.5"
AMOLED
AMOLED
480x800
8
MP
MP
2mp
1GB
RAM
RAM
Dual-core
1850
mAh
mAh
(Removable)
What's the better phone? Asus Zenfone 4 (ZE554KL 64GB/4GB NFC)
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!
29 Advantages 
4 Advantages | 19 Common items in both devices |
| 16 million |
| LED flash |
| Only digital zoom |
| PDAF: phase detection autofocus / Autofocus |
| 4G LTE-A / 4G LTE |
| Capacitive |
| Multitouch |
| +12 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 4 (ZE554KL 64GB/4GB NFC) | Galaxy S2 LTE (SGH-i727R) | |
| Model | Zenfone 4 (ZE554KL 64GB/4GB NFC) | Galaxy S2 LTE (SGH-i727R) |
| Other model names | Asus Zenfone 4 (NFC version) Snapdragon 630 (4GB RAM) | Rogers Galaxy S II 4G LTE SGH-i727R, Samsung Celox |
| Country or region available |       (Europe), South Africa, China, USA, Hong Kong, Taiwan |  Canada |
| Brand | Asus | Samsung |
| Release date | 10/1/2017 | 11/6/2011, Announced: 11/1/2011 |
| Depth | 7.5 millimeters (0.3 inches) | 9.4 millimeters (0.37 inches) |
| Size (width x height) | 75.2 x 155.4 millimeters (2.96 x 6.12 in) | 69.9 x 130.9 millimeters (2.75 x 5.15 in) |
| Weight | 165 grams (5.78 ounces) | 132 grams (4.62 ounces) |
| Build, materials | Aluminum frame, glass front/back | Plastic body, glass front |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| Asus Zenfone 4 (ZE554KL 64GB/4GB NFC) | Galaxy S2 LTE (SGH-i727R) | |
| Display type | TFT IPS LCD | Super AMOLED Plus |
| Screen size | 5.5" inches | 4.5" inches |
| Screen-to-body ratio | ~71.4% (screen-to-body ratio) | ~63% (screen-to-body ratio) |
| Display resolution | 1080x1920 pixels | 480x800 pixels |
| Touchscreen | Capacitive Multitouch 10-points | Capacitive Multitouch |
| Pixel density (dot pitch) | 401 PPI | 207 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass 3 | Not supported |
| Refresh rate | feature not registered | 60Hz |
| Display features | feature not registered | Not supported |
🤖 Operating System | ||
| Asus Zenfone 4 (ZE554KL 64GB/4GB NFC) | Galaxy S2 LTE (SGH-i727R) | |
| System version | Android 7.1.1 Nougat | Android 2.3.5 Gingerbread |
| Firmware update | feature not registered | Android 4.1.2 Jelly Bean |
| User Interface | feature not registered | TouchWiz 4.0 UI |
⚙️ Processor | ||
| Asus Zenfone 4 (ZE554KL 64GB/4GB NFC) | Galaxy S2 LTE (SGH-i727R) | |
| Chipset | 64bit: Qualcomm Snapdragon 630 SDM630 (14nm) | 32bit: Qualcomm Snapdragon S3 (APQ8060) (45nm) |
| CPU | Octa-core, 2 processors: 4x 2.2GHz ARM Cortex-A53 (Quad-core) 4x 1.8GHz ARM Cortex-A53 (Quad-core) | Dual-core, 1 processor: 2x 1.5GHz Scorpion (Dual-core) |
| GPU graphical controller | Qualcomm Adreno 508 | Qualcomm Adreno 220 (266MHz) |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Asus Zenfone 4 (ZE554KL 64GB/4GB NFC) | Galaxy S2 LTE (SGH-i727R) | |
| RAM memory | 4GB LPDDR4X | 1GB LPDDR2 |
| Internal storage | 64GB (52GB available) | 16GB (14GB available) |
| External storage | Until 256GB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot) | Until 32GB microSD, microSDHC (dedicated slot) |
📶 Mobile networks | ||
| Asus Zenfone 4 (ZE554KL 64GB/4GB NFC) | Galaxy S2 LTE (SGH-i727R) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card (hybrid slot/shares the same microSD slot) | Not supported |
| SIM card | 2 slots (Dual-SIM) nano-SIM (4FF) | 1 slot (Single-SIM) Standard mini-SIM (2FF) |
| Maximum Download / Upload | 600/150 Mbps | 75/25 Mbps |
| Network technology | 2G, 3G, 4G | 2G, 3G, 4G |
| 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 | China version: UMTS 850/900/1900/2100 North America version: UMTS 800/850/900/1700/1900/2100 Taiwan version: UMTS 800/850/900/1800/1900/2100 | UMTS 850/1900/2100 |
| Primary 4G network | LTE Cat12 China version: LTE (Bands 1,2,3,5,7,8) TD-LTE (Bands 34,38,39,40,41) North America version: LTE (Bands 1,2,3,4,5,7,8,12,17,28) Taiwan version: LTE (Bands 1,2,3,5,7,8,18,19,28) TD-LTE (Bands 38,39,40,41) | LTE Cat2 (1, 4, 7) |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE |
| 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 4 (ZE554KL 64GB/4GB NFC) | Galaxy S2 LTE (SGH-i727R) | |
| Back camera (main camera) | (dual camera) 12.2 megapixels 8MP 12mm | 8 megapixels |
| Main camera resolution | 4032x3024 pixels | 3264x2448 pixels |
| Video recording (primary) | 4K UHD (3840x2160) 30 fps | Full HD (1920x1080) 30 fps |
| Flash | LED flash | LED flash |
| Focal aperture | f/1.8 (aperture) | f/2.6 (aperture) |
| Focal length | 25mm (lens) | feature not registered |
| Sensor size | 1/2.55" inches | 1/3.2" inches |
| Pixel size | 1.4µm pixel | feature not registered |
| Autofocus | PDAF: phase detection autofocus | Autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | OIS (4-axis): Optical stabilization | 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 | Not supported |
| HDR | HDR photo on both cameras | Not supported |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| Asus Zenfone 4 (ZE554KL 64GB/4GB NFC) | Galaxy S2 LTE (SGH-i727R) | |
| Front camera (secondary) | 8 megapixels | 2 megapixels |
| Front camera resolution | 3264x2448 pixels | 1600x1200 pixels |
| Video recording (secondary) | Full HD (1920x1080) | VGA (640x480) |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.0 (aperture) | feature not registered |
| Focal length | 24mm (lens) | feature not registered |
| Sensor size | feature not registered | feature not registered |
| Pixel size | feature not registered | feature not registered |
🔉 Sound and multimedia | ||
| Asus Zenfone 4 (ZE554KL 64GB/4GB NFC) | Galaxy S2 LTE (SGH-i727R) | |
| Loudspeaker | Supported | Mono sound (not stereo) |
| Active noise cancellation | 2 microphones or more | 2 microphones |
| Radio | FM | Not supported |
| TV | Not supported | Not supported |
| Video formats | MP4, H.265, H.264, H.263 | MP4, DivX, XviD, H.263, H.264, WMV |
| Audio formats | MP3, WAV, OGG, eAAC+ | MP3, WAV, WMA, eAAC+, AC3, FLAC |
🔌 Connectivity | ||
| Asus Zenfone 4 (ZE554KL 64GB/4GB NFC) | Galaxy S2 LTE (SGH-i727R) | |
| USB | USB 2.0 Type-C reversible connector | MicroUSB 2.0, USB OTG On-The-Go |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | Not supported | Micro-B USB MHL |
| Bluetooth | 5.0 + A2DP/LE | 3.0 + A2DP |
| WiFi | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO 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, BeiDou | A-GPS, GeoTagging |
| NFC | Supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Asus Zenfone 4 (ZE554KL 64GB/4GB NFC) | Galaxy S2 LTE (SGH-i727R) | |
| Sensors | Accelerometer Ambient light sensor Compass Fingerprint sensor Gyroscope Hall effect Proximity sensor | Accelerometer Ambient light sensor Compass Gyroscope Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Asus Zenfone 4 (ZE554KL 64GB/4GB NFC) | Galaxy S2 LTE (SGH-i727R) | |
| Battery type | LiPo: li-ion polymer (Non removable) | Li-Ion: lithium-ion (Removable) |
| Battery capacity | 3300 mAh | 1850 mAh |
| Charger, watts | 10W (5V/2A) Wired charging | Wired charging |
| Inductive / wireless charging | feature not registered | Not supported |
| Talk time autonomy | 30 hours (1.3 days) | 5 hours |
| Standby | 552 hours (23 days) | 250 hours (10.4 days) |
➕ Other features | ||
| Asus Zenfone 4 (ZE554KL 64GB/4GB NFC) | Galaxy S2 LTE (SGH-i727R) | |
| 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: Moonlight white, Mint green, Midnight black • Asus ZenUI 4.0 • 2.5D glass screen • Sony IMX362 back camera sensor • Fast battery charging: 50% in 36min • 24-bit/192kHz audio • DTS surround sound • VoLTE | • Colors: Black, White HAC M3/T3 Java framework |
☢️ Radiation rate | ||
| Asus Zenfone 4 (ZE554KL 64GB/4GB NFC) | Galaxy S2 LTE (SGH-i727R) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | 0.3W/kg (head), 0.85W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | 0.197W/kg (head) |