LG G6 (H872) vs Samsung Galaxy A21 (SM-A215U)
Side by side comparison between LG G6 vs Samsung Galaxy A21 phones, differences, pros, cons and full specifications. What's the better?
,
5.7"
IPS
IPS
1440x2880
13
MP
MP
5mp
4GB
RAM
RAM
Quad-core
3300
mAh
mAh
(Non removable)
vs
6.5"
PLS
PLS
720x1600
16
MP
MP
13mp
3GB
RAM
RAM
Octa-core
4000
mAh
mAh
(Non removable)
What's the better phone? LG G6 (H872)
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 
8 Advantages | 24 Common items in both devices |
| 32GB (21GB available) / 32GB (20GB available) |
| Until 1TB microSD, microSDXC / Until 512GB microSD, microSDXC |
| 60Hz |
| 16 million |
| Only digital zoom |
| PDAF: phase detection autofocus |
| HDR photo/video and HDR photo on front camera / HDR photo on both cameras |
| +17 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 | ||
| LG G6 (H872) | Galaxy A21 (SM-A215U) | |
| Model | LG G6 (H872) | Galaxy A21 (SM-A215U) |
| Other model names | T-Mobile LG G6 32GB, LG-H872, LGH872 | Galaxy A21 SM-A215U (Sprint, T-Mobile, US Cellular, Verizon) |
| Country or region available |  USA | USA |
| Brand | LG | Samsung |
| Release date | 3/10/2017, Announced: 2/26/2017 | 6/26/2020 |
| Depth | 7.9 millimeters (0.31 inches) | 8.1 millimeters (0.32 inches) |
| Size (width x height) | 71.9 x 148.9 millimeters (2.83 x 5.86 in) | 76.7 x 167.8 millimeters (3.02 x 6.61 in) |
| Weight | 163 grams (5.71 ounces) | 193 grams (6.76 ounces) |
| Build, materials | Aluminum frame, glass front/back | Plastic body, glass front |
| Protection against water and others | IP68 certified: dust/waterproof over 1.5 meters and 30min. MIL-STD-810G military certified: salt, dust, humidity, rain, vibration, solar radiation, transport and thermal shock resistant. | Not supported |
📲 Display | ||
| LG G6 (H872) | Galaxy A21 (SM-A215U) | |
| Display type | TFT IPS LCD | TFT PLS |
| Screen size | 5.7" inches | 6.5" inches |
| Screen-to-body ratio | ~78.3% (screen-to-body ratio) | ~79.3% (screen-to-body ratio) |
| Display resolution | 1440x2880 pixels (18:9) | 720x1600 pixels (20:9) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 565 PPI | 270 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass 3 | Not supported |
| Refresh rate | 60Hz | 60Hz |
| Display features | Dolby Vision/HDR10 Always-On Display | Not supported |
🤖 Operating System | ||
| LG G6 (H872) | Galaxy A21 (SM-A215U) | |
| System version | Android 7.0 Nougat | Android 10 |
| Firmware update | Android 8.0 Oreo | feature not registered |
| User Interface | LG UX UI 6.0 / 7.0 | feature not registered |
⚙️ Processor | ||
| LG G6 (H872) | Galaxy A21 (SM-A215U) | |
| Chipset | 64bit: Qualcomm Snapdragon 821 (MSM8996AC) (14nm) | 64bit: MediaTek Helio P35 (MT6765) (12nm) |
| CPU | Quad-core, 2 processors: 2x 2.35GHz Kryo (Dual-core) 2x 1.6GHz Kryo (Dual-core) | Octa-core, 2 processors: 4x 2.3GHz ARM Cortex-A53 (Quad-core) 4x 1.8GHz ARM Cortex-A53 (Quad-core) |
| GPU graphical controller | Qualcomm Adreno 530 (653MHz) | PowerVR GE8320 MP2 (680MHz) |
| Performance (benchmark) | AnTuTu: 158785 (v7) Geekbench: 4175 (v4.4) GFXBench: 8.5fps (ES 3.1 onscreen) | feature not registered |
💽 Memory and storage | ||
| LG G6 (H872) | Galaxy A21 (SM-A215U) | |
| RAM memory | 4GB LPDDR4 | 3GB LPDDR3 |
| Internal storage | 32GB (21GB available) UFS 2.0 | 32GB (20GB available) eMMC 5.1 |
| External storage | Until 1TB microSD, microSDXC (dedicated slot) | Until 512GB microSD, microSDXC (dedicated slot) |
📶 Mobile networks | ||
| LG G6 (H872) | Galaxy A21 (SM-A215U) | |
| Dual-SIM | Not supported | Not supported |
| SIM card | 1 slot (Single-SIM) nano-SIM (4FF) | 1 slot (Single-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 600/150 Mbps | 150/50 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 | CDMA 800/1900, GSM 850/900/1800/1900 |
| Primary 3G network | UMTS 850/1700/1900/2100 | CDMA2000 1xEV-DO UMTS 850/900/1700/1900/2100 |
| Primary 4G network | LTE Cat12 (2, 4, 5, 12, 66) LTE Roaming (1, 3, 7, 13, 20) | LTE Cat4 (1, 2, 3, 5, 7, 8, 20, 28) TD-LTE (38, 40, 41) VoLTE |
| Primary 5G network | Not supported | Not supported |
| Primary data network | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, LTE, LTE-A | GPRS, EDGE, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE |
| Secondary 2G network | Not supported | Not supported |
| Secondary 3G network | Not supported | Not supported |
| Secondary 4G network | Not supported | Not supported |
| Secondary data network | Not supported | Not supported |
📷 Camera | ||
| LG G6 (H872) | Galaxy A21 (SM-A215U) | |
| Back camera (main camera) | (dual camera) 13 megapixels 13MP ultrawide f/2.41/4"12mm125°FF | (quad camera) 16 megapixels 8MP ultrawide f/2.21/4.0"1.12µm 2MP macro f/2.4 2MP depth f/2.4 |
| Main camera resolution | 4160x3120 pixels | 4608x3456 pixels |
| Video recording (primary) | 4K UHD (3840x2160) 30 fps | Full HD (1920x1080) 30 fps |
| Flash | Dual-LED flash | LED flash |
| Focal aperture | f/1.8 (aperture) | f/1.8 (aperture) |
| Focal length | 30mm lens | feature not registered |
| Sensor size | 1/3" inches | 1/3.06" inches |
| Pixel size | 1.12µm pixel | 1µm pixel |
| Autofocus | PDAF: phase detection autofocus | PDAF: phase detection autofocus |
| Touch focus | Supported | Supported |
| Image stabilization | OIS (3-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 | Supported | Not supported |
| HDR | HDR photo/video and HDR photo on front camera | HDR photo on both cameras |
| Camera extras | 1080p@60fps 720p@120fps | feature not registered |
📸 Front camera | ||
| LG G6 (H872) | Galaxy A21 (SM-A215U) | |
| Front camera (secondary) | 5 megapixels | 13 megapixels |
| Front camera resolution | 2560x1920 pixels | 4128x3096 pixels |
| Video recording (secondary) | Full HD (1920x1080) | Full HD (1920x1080) |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.2 (aperture) | f/2.0 (aperture) |
| Focal length | 18mm lens | feature not registered |
| Sensor size | feature not registered | feature not registered |
| Pixel size | feature not registered | 1.12µm pixel |
🔉 Sound and multimedia | ||
| LG G6 (H872) | Galaxy A21 (SM-A215U) | |
| Loudspeaker | Stereo sound 32-bit/192kHz | 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.265, H.264, H.263, DivX, XviD | MP4, H.265, H.264, H.263, XviD, MKV |
| Audio formats | MP3, WAV, eAAC+, FLAC | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity | ||
| LG G6 (H872) | Galaxy A21 (SM-A215U) | |
| USB | USB 3.1 Type-C, USB OTG On-The-Go | USB 2.0 Type-C reversible connector |
| Audio output | 3.5mm jack | 3.5mm jack |
| TV output | USB Type-C SlimPort® | Not supported |
| Bluetooth | 4.2 + A2DP | 5.0 + A2DP/LE |
| WiFi | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot | 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO WiFi Direct, hotspot |
| DLNA | Supported | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS, BeiDou | A-GPS, GeoTagging, GLONASS |
| NFC | Supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| LG G6 (H872) | Galaxy A21 (SM-A215U) | |
| Sensors | Accelerometer Ambient light sensor Barometer Compass Face unlock Fingerprint sensor (rear-mounted) Gyroscope Hall effect Proximity sensor | Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| LG G6 (H872) | Galaxy A21 (SM-A215U) | |
| Battery type | LiPo: li-ion polymer (Non removable) | LiPo: li-ion polymer (Non removable) |
| Battery capacity | 3300 mAh | 4000 mAh |
| Charger, watts | 18W Wired fast charging Quick Charge 3 | 15W Wired fast charging |
| Inductive / wireless charging | Not supported | Not supported |
| Talk time autonomy | 23 hours | feature not registered |
| Standby | 384 hours (16 days) | feature not registered |
➕ Other features | ||
| LG G6 (H872) | Galaxy A21 (SM-A215U) | |
| Call control | Voice dialing, Voice recorder, Voice commands | Voice dialing, Voice recorder, Voice commands |
| Messaging | SMS (T9), 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, HTML5 | HTML, XHTML, HTML5 |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • Colors: Astro black, Mystic white, Ice platinum • Fast battery charging: 50% in 30min • Knock Code, KnockOn | • Colors: Black • One UI 2.0 |
☢️ Radiation rate | ||
| LG G6 (H872) | Galaxy A21 (SM-A215U) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | 0.6W/kg (head), 1.27W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | feature not registered |