Samsung Galaxy A15 (SM-A155M/DSN 128GB/6GB) vs Samsung Galaxy S2 Skyrocket (SGH-i727)
Side by side comparison between Samsung Galaxy A15 vs Samsung Galaxy S2 Skyrocket phones, differences, pros, cons and full specifications. What's the better?
,
6.5"
AMOLED
AMOLED
1080x2340
50
MP
MP
13mp
6GB
RAM
RAM
Octa-core
5000
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? Samsung Galaxy A15 (SM-A155M/DSN 128GB/6GB)
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!
24 Advantages 
5 Advantages | 17 Common items in both devices |
| Plastic body, glass front |
| Super AMOLED / Super AMOLED Plus |
| 16 million |
| LED flash |
| Only digital zoom |
| Autofocus |
| EIS: Digital stabilization |
| +10 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 A15 (SM-A155M/DSN 128GB/6GB) | Galaxy S2 Skyrocket (SGH-i727) | |
| Model | Galaxy A15 (SM-A155M/DSN 128GB/6GB) | Galaxy S2 Skyrocket (SGH-i727) |
| Other model names | Galaxy A15 4G LTE SM-A155M/Dual-SIM NFC | AT&T Samsung Galaxy S II Skyrocket i727 |
| Country or region available |    (Latin America), Colombia, Costa Rica |  USA |
| Brand | Samsung | Samsung |
| Release date | 12/16/2023, Announced: 12/11/2023 | 11/6/2011 |
| Depth | 8.4 millimeters (0.33 inches) | 9.4 millimeters (0.37 inches) |
| Size (width x height) | 76.8 x 160.1 millimeters (3.02 x 6.3 in) | 68.8 x 129.8 millimeters (2.71 x 5.11 in) |
| Weight | 200 grams (7 ounces) | 131 grams (4.59 ounces) |
| Build, materials | Plastic body, glass front | Plastic body, glass front |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| Galaxy A15 (SM-A155M/DSN 128GB/6GB) | Galaxy S2 Skyrocket (SGH-i727) | |
| Display type | Super AMOLED | Super AMOLED Plus |
| Screen size | 6.5" inches | 4.5" inches |
| Screen-to-body ratio | ~84.3% (screen-to-body ratio) | ~64.5% (screen-to-body ratio) |
| Display resolution | 1080x2340 pixels (19.5:9) | 480x800 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 396 PPI | 207 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Not supported | Not supported |
| Refresh rate | 90Hz | feature not registered |
| Display features | 800nits[peak] | feature not registered |
🤖 Operating System | ||
| Galaxy A15 (SM-A155M/DSN 128GB/6GB) | Galaxy S2 Skyrocket (SGH-i727) | |
| System version | Android 14 | Android 2.3.5 Gingerbread |
| Firmware update | feature not registered | Android 4.1.2 Jelly Bean |
| User Interface | One UI 6.1 | feature not registered |
⚙️ Processor | ||
| Galaxy A15 (SM-A155M/DSN 128GB/6GB) | Galaxy S2 Skyrocket (SGH-i727) | |
| Chipset | 64bit: MediaTek Helio G99 (6nm) | 32bit: Qualcomm Snapdragon S3 MSM8260 |
| CPU | Octa-core, 2 processors: 2x 2.2GHz ARM Cortex-A76 (Dual-core) 6x 2GHz ARM Cortex-A55 (Hexa-core) | Dual-core, 1 processor: 2x 1.5GHz Scorpion (Dual-core) |
| GPU graphical controller | ARM Mali-G57 MC2 | Qualcomm Adreno 220 |
| Performance (benchmark) | AnTuTu: 317085 (v9), 375321 (v10) Geekbench: 1928 (v5), 1936 (v6) | feature not registered |
💽 Memory and storage | ||
| Galaxy A15 (SM-A155M/DSN 128GB/6GB) | Galaxy S2 Skyrocket (SGH-i727) | |
| RAM memory | 6GB LPDDR4X | 1GB LPDDR2 |
| Internal storage | 128GB (108GB available) eMMC 5.1 | 16GB |
| External storage | Until 1TB microSD, microSDXC (hybrid slot/shares the same SIM-2 slot) | Until 32GB microSD, microSDHC (dedicated slot) |
📶 Mobile networks | ||
| Galaxy A15 (SM-A155M/DSN 128GB/6GB) | Galaxy S2 Skyrocket (SGH-i727) | |
| 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 | 300/150 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 | UMTS 850/900/1700/1900/2100 | UMTS 850/1900/2100 |
| Primary 4G network | LTE Cat7 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 26, 28, 66) TD-LTE (38, 40, 41) VoLTE | LTE Cat2 (Bands 4, 17) |
| 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 | UMTS 850/900/1700/1900/2100 | Not supported |
| Secondary 4G network | LTE Cat7 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 26, 28, 66) TD-LTE (38, 40, 41) VoLTE | Not supported |
| Secondary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A | Not supported |
📷 Camera | ||
| Galaxy A15 (SM-A155M/DSN 128GB/6GB) | Galaxy S2 Skyrocket (SGH-i727) | |
| Back camera (main camera) | (triple camera) 50 megapixels 5MP ultrawide f/2.2 2MP macro f/2.4 | 8 megapixels |
| Main camera resolution | 8160x6120 pixels | 3264x2448 pixels |
| Video recording (primary) | Full HD (1920x1080) 30 fps | Full HD (1920x1080) 30 fps |
| Flash | LED flash | LED flash |
| Focal aperture | f/1.8 (aperture) | 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 |
| Autofocus | Autofocus | Autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | EIS: Digital stabilization | EIS: Digital stabilization |
| Zoom | Only digital zoom | Only digital zoom |
| Face/smile detection | Face detection, Smile detection | Face detection |
| BSI sensor | Supported | Not supported |
| HDR | HDR photo on both cameras | Not supported |
| Camera extras | 1080p@30fps 720p@120fps (slow motion) | feature not registered |
📸 Front camera | ||
| Galaxy A15 (SM-A155M/DSN 128GB/6GB) | Galaxy S2 Skyrocket (SGH-i727) | |
| Front camera (secondary) | 13 megapixels | 2 megapixels |
| Front camera resolution | 4128x3096 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 | 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 | ||
| Galaxy A15 (SM-A155M/DSN 128GB/6GB) | Galaxy S2 Skyrocket (SGH-i727) | |
| Loudspeaker | Mono sound (not stereo) | Supported |
| Active noise cancellation | 2 microphones or more | 2 microphones or more |
| Radio | FM (RDS) | Not supported |
| TV | Not supported | Not supported |
| Video formats | MP4, H.265, H.264, H.263, XviD, MKV | MP4, H.264, H.263, XviD, MKV |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity | ||
| Galaxy A15 (SM-A155M/DSN 128GB/6GB) | Galaxy S2 Skyrocket (SGH-i727) | |
| USB | USB 2.0 Type-C, USB OTG On-The-Go | MicroUSB 2.0, USB OTG On-The-Go |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | USB Type-C (reversible) | Micro-B USB MHL |
| Bluetooth | 5.3 + 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, GALILEO, BeiDou, QZSS | A-GPS, GeoTagging |
| NFC | Supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Galaxy A15 (SM-A155M/DSN 128GB/6GB) | Galaxy S2 Skyrocket (SGH-i727) | |
| Sensors | Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (side-mounted) Virtual proximity sensor | Accelerometer Ambient light sensor Compass Gyroscope Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Galaxy A15 (SM-A155M/DSN 128GB/6GB) | Galaxy S2 Skyrocket (SGH-i727) | |
| Battery type | LiPo: li-ion polymer (Non removable) | Li-Ion: lithium-ion (Removable) |
| Battery capacity | 5000 mAh | 1850 mAh |
| Charger, watts | 25W Wired fast charging | Wired charging |
| Inductive / wireless charging | Not supported | feature not registered |
| Talk time autonomy | 51 hours (2.1 days) | 7 hours |
| Standby | feature not registered | 256 hours (10.7 days) |
➕ Other features | ||
| Galaxy A15 (SM-A155M/DSN 128GB/6GB) | Galaxy S2 Skyrocket (SGH-i727) | |
| Call control | Voice dialing, Voice recorder, Voice commands | 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: Brave Black, Optimistic Blue, Magical Blue, Personality Yellow | • Colors: Black, White • Samsung TouchWiz 4.0 UI • HAC M3/T3 • Java framework |
☢️ Radiation rate | ||
| Galaxy A15 (SM-A155M/DSN 128GB/6GB) | Galaxy S2 Skyrocket (SGH-i727) | |
| 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) |