Samsung Galaxy S2 (SGH-i777 16GB) vs Samsung Galaxy A9 2018 (SM-A920F/DS 128GB/8GB)
Side by side comparison between Samsung Galaxy S2 (SGH-i777) vs Samsung Galaxy A9 (2018) phones, differences, pros, cons and full specifications. What's the better?
,
4.3"
AMOLED
AMOLED
480x800
8
MP
MP
2mp
1GB
RAM
RAM
Dual-core
1650
mAh
mAh
(Removable)
vs
6.3"
AMOLED
AMOLED
1080x2220
24
MP
MP
24mp
8GB
RAM
RAM
Octa-core
3800
mAh
mAh
(Non removable)
What's the better phone? Samsung Galaxy A9 2018 (SM-A920F/DS 128GB/8GB)
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!
2 Advantages 
27 Advantages | 20 Common items in both devices |
| Super AMOLED Plus / Super AMOLED |
| 16 million |
| LED flash |
| Autofocus / PDAF: phase detection autofocus |
| EIS: Digital stabilization |
| Capacitive |
| Multitouch |
| +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 | ||
| Galaxy S2 (SGH-i777 16GB) | Galaxy A9 2018 (SM-A920F/DS 128GB/8GB) | |
| Model | Galaxy S2 (SGH-i777 16GB) | Galaxy A9 2018 (SM-A920F/DS 128GB/8GB) |
| Other model names | AT&T Samsung Galaxy S II i777, Samsung Attain | Galaxy A9 SM-A920F/Dual-Sim (8GB RAM), Samsung A920 |
| Country or region available |  USA |  (Europe) |
| Brand | Samsung | Samsung |
| Release date | 10/2/2011 | 10/11/2018 |
| Depth | 8.9 millimeters (0.35 inches) | 7.8 millimeters (0.31 inches) |
| Size (width x height) | 66 x 126 millimeters (2.6 x 4.96 in) | 77 x 162.5 millimeters (3.03 x 6.4 in) |
| Weight | 122 grams (4.27 ounces) | 183 grams (6.41 ounces) |
| Build, materials | Plastic body, glass front | Aluminum body, glass front |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| Galaxy S2 (SGH-i777 16GB) | Galaxy A9 2018 (SM-A920F/DS 128GB/8GB) | |
| Display type | Super AMOLED Plus | Super AMOLED |
| Screen size | 4.3" inches | 6.3" inches |
| Screen-to-body ratio | ~63.3% (screen-to-body ratio) | ~80.5% (screen-to-body ratio) |
| Display resolution | 480x800 pixels | 1080x2220 pixels (18.5:9) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 217 PPI | 392 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass | Gorilla Glass 5 |
| Refresh rate | feature not registered | 60Hz |
| Display features | feature not registered | Not supported |
🤖 Operating System | ||
| Galaxy S2 (SGH-i777 16GB) | Galaxy A9 2018 (SM-A920F/DS 128GB/8GB) | |
| System version | Android 2.3.4 Gingerbread | Android 8.0 Oreo |
| Firmware update | Android 2.3.6 Gingerbread | Android 9.0 Pie |
| User Interface | feature not registered | feature not registered |
⚙️ Processor | ||
| Galaxy S2 (SGH-i777 16GB) | Galaxy A9 2018 (SM-A920F/DS 128GB/8GB) | |
| Chipset | 32bit: Samsung Exynos 4 Dual 4210 (45nm) | 64bit: Qualcomm Snapdragon 660 SDM660 (14nm) |
| CPU | Dual-core, 1 processor: 2x 1.2GHz ARM Cortex-A9 (Dual-core) | Octa-core, 2 processors: 4x 2.2GHz Kryo 260 Gold (Quad-core) 4x 1.8GHz Kryo 260 Silver (Quad-core) |
| GPU graphical controller | ARM Mali-400 MP4 | Qualcomm Adreno 512 650Mhz |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Galaxy S2 (SGH-i777 16GB) | Galaxy A9 2018 (SM-A920F/DS 128GB/8GB) | |
| RAM memory | 1GB LPDDR2 | 8GB LPDDR4X |
| Internal storage | 16GB (13GB available) | 128GB (110GB available) eMMC 5.1 |
| External storage | Until 32GB microSD, microSDHC (dedicated slot) | Until 1TB microSD, microSDXC (dedicated slot) |
📶 Mobile networks | ||
| Galaxy S2 (SGH-i777 16GB) | Galaxy A9 2018 (SM-A920F/DS 128GB/8GB) | |
| Dual-SIM | Not supported | Dual-SIM Standby - Call active on one sim card (dedicated slot) |
| SIM card | 1 slot (Single-SIM) Standard mini-SIM (2FF) | 2 slots (Dual-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 21/5.76 Mbps | 450/50 Mbps |
| Network technology | 2G, 3G | 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 | UMTS 850/1900/2100 | UMTS 850/900/1900/2100 |
| Primary 4G network | Not supported | LTE Cat9 (1, 3, 5, 7, 8, 20) TD-LTE (38, 40) |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+ | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A |
| Secondary 2G network | Not supported | GSM 850/900/1800/1900 |
| Secondary 3G network | Not supported | Not supported |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | Not supported | GPRS, EDGE |
📷 Camera | ||
| Galaxy S2 (SGH-i777 16GB) | Galaxy A9 2018 (SM-A920F/DS 128GB/8GB) | |
| Back camera (main camera) | 8 megapixels | (quad camera) 24 megapixels 10MP telephoto f/2.452mm1/3.9"1.0µmAF2x-optical-zoom 8MP ultrawide f/2.412mm1/4.0"1.12µm 5MP depth f/2.2 |
| Main camera resolution | 3264x2448 pixels | 5656x4240 pixels |
| Video recording (primary) | Full HD (1920x1080) 30 fps | 4K UHD (3840x2160) 30 fps |
| Flash | LED flash | LED flash |
| Focal aperture | feature not registered | f/1.7 (aperture) |
| Focal length | feature not registered | 27mm (lens) |
| Sensor size | feature not registered | 1/2.8" inches |
| Pixel size | feature not registered | 0.9µm pixel |
| Autofocus | Autofocus | PDAF: phase detection autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | EIS: Digital stabilization | EIS: Digital stabilization |
| Zoom | Only digital zoom | Digital and optical zoom |
| Face/smile detection | Face detection | Face detection, Smile detection |
| BSI sensor | Not supported | Not supported |
| HDR | Not supported | HDR photo on both cameras |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| Galaxy S2 (SGH-i777 16GB) | Galaxy A9 2018 (SM-A920F/DS 128GB/8GB) | |
| Front camera (secondary) | 2 megapixels | 24 megapixels |
| Front camera resolution | 1600x1200 pixels | 5656x4240 pixels |
| Video recording (secondary) | Not supported | Full HD (1920x1080) |
| Front flash | Not supported | Not supported |
| Focal aperture | feature not registered | f/2.0 (aperture) |
| Focal length | feature not registered | 27mm (lens) |
| Sensor size | feature not registered | 1/2.8" inches |
| Pixel size | feature not registered | 0.9µm pixel |
🔉 Sound and multimedia | ||
| Galaxy S2 (SGH-i777 16GB) | Galaxy A9 2018 (SM-A920F/DS 128GB/8GB) | |
| Loudspeaker | Supported | Supported |
| Active noise cancellation | 2 microphones or more | 2 microphones or more |
| Radio | Not supported | FM |
| TV | Not supported | Not supported |
| Video formats | MP4, H.264, H.263, XviD | MP4, H.265, H.264, H.263, XviD, MKV |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity | ||
| Galaxy S2 (SGH-i777 16GB) | Galaxy A9 2018 (SM-A920F/DS 128GB/8GB) | |
| USB | MicroUSB 2.0, USB OTG On-The-Go | USB 2.0 Type-C, USB OTG On-The-Go |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | Micro-B USB MHL | Not supported |
| Bluetooth | 3.0 + A2DP | 5.0 + A2DP/LE |
| WiFi | 802.11 a/b/g/n [wifi4] (2.4GHz, 5GHz) WiFi Direct, hotspot | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot |
| DLNA | feature not registered | Not supported |
| GPS | A-GPS, GeoTagging | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou |
| NFC | Not supported | Supported |
| Infrared port | feature not registered | Not supported |
🧭 Sensors | ||
| Galaxy S2 (SGH-i777 16GB) | Galaxy A9 2018 (SM-A920F/DS 128GB/8GB) | |
| Sensors | Accelerometer Ambient light sensor Compass Gyroscope Proximity sensor | Accelerometer Ambient light sensor ANT+ Compass Fingerprint sensor (rear-mounted) Gyroscope Hall effect Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Galaxy S2 (SGH-i777 16GB) | Galaxy A9 2018 (SM-A920F/DS 128GB/8GB) | |
| Battery type | Li-Ion: lithium-ion (Removable) | Li-Ion: lithium-ion (Non removable) |
| Battery capacity | 1650 mAh | 3800 mAh |
| Charger, watts | Wired charging | 18W Wired fast charging |
| Inductive / wireless charging | feature not registered | Not supported |
| Talk time autonomy | 8 hours | feature not registered |
| Standby | 400 hours (16.7 days) | feature not registered |
➕ Other features | ||
| Galaxy S2 (SGH-i777 16GB) | Galaxy A9 2018 (SM-A920F/DS 128GB/8GB) | |
| Call control | Voice dialing, Voice recorder, Voice commands | Voice dialing, Voice recorder |
| Messaging | SMS (Swype), MMS, E-mail, Push mail | SMS (T9), 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, Flash player | HTML, XHTML, HTML5 |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • Colors: Black • Samsung TouchWiz 4.0 UI • Java framework | • Colors: Caviar Black, Lemonade Blue, Bubblegum Pink • Samsung Pay • Dolby Atmos |
☢️ Radiation rate | ||
| Galaxy S2 (SGH-i777 16GB) | Galaxy A9 2018 (SM-A920F/DS 128GB/8GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | 0.27W/kg (head), 0.84W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | feature not registered |