LG K51 (K500UMT3) vs Samsung Galaxy S4 Active (SGH-i537)
Side by side comparison between LG K51 vs Samsung Galaxy S4 Active phones, differences, pros, cons and full specifications. What's the better?
,
6.5"
IPS
IPS
720x1560
13
MP
MP
13mp
3GB
RAM
RAM
Octa-core
4000
mAh
mAh
(Non removable)
vs
5"
TFT
TFT
1080x1920
8
MP
MP
2.1mp
2GB
RAM
RAM
Quad-core
2600
mAh
mAh
(Removable)
What's the better phone? LG K51 (K500UMT3)
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!
19 Advantages 
7 Advantages | 24 Common items in both devices |
| Plastic body, glass front |
| 60Hz |
| 16 million |
| LED flash |
| Only digital zoom |
| PDAF: phase detection autofocus / Autofocus |
| EIS: Digital stabilization |
| +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 K51 (K500UMT3) | Galaxy S4 Active (SGH-i537) | |
| Model | K51 (K500UMT3) | Galaxy S4 Active (SGH-i537) |
| Other model names | LG K51 (T-Mobile) LMK500UMT3ATMOTN, LM-K500UMT3 | Galaxy S4 Active SGH-i537 (AT&T) |
| Country or region available |  USA | USA |
| Brand | LG | Samsung |
| Release date | 5/1/2020 | 6/20/2013 |
| Depth | 8.47 millimeters (0.33 inches) | 9.1 millimeters (0.36 inches) |
| Size (width x height) | 77.92 x 166.96 millimeters (3.07 x 6.57 in) | 71.3 x 139.7 millimeters (2.81 x 5.5 in) |
| Weight | 204 grams (7.14 ounces) | 153 grams (5.36 ounces) |
| Build, materials | Plastic body, glass front | Plastic body, glass front |
| Protection against water and others | MIL-STD-810G military certified: salt, dust, humidity, rain, vibration, solar radiation, transport and thermal shock resistant. | IP67 certified: dust proof and waterproof over 1 meter and 30min |
📲 Display | ||
| LG K51 (K500UMT3) | Galaxy S4 Active (SGH-i537) | |
| Display type | TFT IPS LCD | TFT LCD |
| Screen size | 6.5" inches | 5" inches |
| Screen-to-body ratio | ~79.7% (screen-to-body ratio) | ~69.2% (screen-to-body ratio) |
| Display resolution | 720x1560 pixels (19.5:9) | 1080x1920 pixels (16:9) |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch 10-points |
| Pixel density (dot pitch) | 264 PPI | 441 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Panda King Glass | Gorilla Glass 2 |
| Refresh rate | 60Hz | 60Hz |
| Display features | Not supported | Not supported |
🤖 Operating System | ||
| LG K51 (K500UMT3) | Galaxy S4 Active (SGH-i537) | |
| System version | Android 10 | Android 4.2.2 Jelly Bean |
| Firmware update | feature not registered | Android 5.0.1 Lollipop |
| User Interface | feature not registered | TouchWiz UI |
⚙️ Processor | ||
| LG K51 (K500UMT3) | Galaxy S4 Active (SGH-i537) | |
| Chipset | 64bit: MediaTek Helio P22 (MT6762) (12nm) | 32bit: Qualcomm Snapdragon 600 (APQ8064AB) (28nm) |
| CPU | Octa-core, 2 processors: 4x 2GHz ARM Cortex-A53 (Quad-core) 4x 1.5GHz ARM Cortex-A53 (Quad-core) | Quad-core, 1 processor: 4x 1.9GHz Krait 300 (Quad-core) |
| GPU graphical controller | PowerVR GE8320 (650MHz) | Qualcomm Adreno 320 (450MHz) |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| LG K51 (K500UMT3) | Galaxy S4 Active (SGH-i537) | |
| RAM memory | 3GB LPDDR3 | 2GB LPDDR3 |
| Internal storage | 32GB (18GB available) eMMC 5.1 | 16GB (11.2GB available) eMMC 4.5 |
| External storage | Until 1TB microSD, microSDXC (dedicated slot) | Until 64GB microSD, microSDXC (dedicated slot) |
📶 Mobile networks | ||
| LG K51 (K500UMT3) | Galaxy S4 Active (SGH-i537) | |
| Dual-SIM | Not supported | Not supported |
| SIM card | 1 slot (Single-SIM) nano-SIM (4FF) | 1 slot (Single-SIM) micro-SIM (3FF) |
| Maximum Download / Upload | 300/50 Mbps | 100/50 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 | GSM 850/900/1800/1900 |
| Primary 3G network | UMTS 850/900/1900/2100 | UMTS 850/1900/2100 |
| Primary 4G network | LTE Cat6 (1, 2, 3, 4, 5, 7, 12, 13, 20, 25, 26, 66, 71) TD-LTE (38, 41) | LTE Cat3 (1, 2, 4, 5, 7, 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 | 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 K51 (K500UMT3) | Galaxy S4 Active (SGH-i537) | |
| Back camera (main camera) | (triple camera) 13 megapixels 5MP ultrawide f/2.21.12μm1/5"115° 2MP depth f/2.41.75μm1/5"85° | 8 megapixels |
| Main camera resolution | 4128x3096 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) | f/2.6 (aperture) |
| Focal length | 26mm lens | feature not registered |
| Sensor size | 1/3" inches | feature not registered |
| Pixel size | 1.12µm pixel | feature not registered |
| Autofocus | PDAF: phase detection 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, Smile detection |
| BSI sensor | Not supported | Not supported |
| HDR | HDR photo on both cameras | HDR photo only main camera |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| LG K51 (K500UMT3) | Galaxy S4 Active (SGH-i537) | |
| Front camera (secondary) | 13 megapixels | 2.1 megapixels |
| Front camera resolution | 4128x3096 pixels | 1920x1080 pixels |
| Video recording (secondary) | Full HD (1920x1080) | Full HD (1920x1080) |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.0 (aperture) | f/2.4 (aperture) |
| Focal length | feature not registered | 31mm lens |
| Sensor size | 1/3" inches | feature not registered |
| Pixel size | 1.12µm pixel | feature not registered |
🔉 Sound and multimedia | ||
| LG K51 (K500UMT3) | Galaxy S4 Active (SGH-i537) | |
| Loudspeaker | Supported | Mono sound (not stereo) |
| Active noise cancellation | 2 microphones or more | 2 microphones or more |
| Radio | Not supported | 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 | ||
| LG K51 (K500UMT3) | Galaxy S4 Active (SGH-i537) | |
| 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 | Not supported | Micro-B USB MHL-2 |
| Bluetooth | 5.0 + A2DP/LE | 4.0 + A2DP |
| 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 | Not supported | Supported |
| GPS | A-GPS, GeoTagging, GLONASS | A-GPS, GeoTagging, GLONASS |
| NFC | Not supported | Supported |
| Infrared port | Not supported | Supported |
🧭 Sensors | ||
| LG K51 (K500UMT3) | Galaxy S4 Active (SGH-i537) | |
| Sensors | Accelerometer Ambient light sensor Compass Fingerprint sensor (rear-mounted) Gyroscope Proximity sensor | Accelerometer Ambient light sensor Barometer Compass Gyroscope Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| LG K51 (K500UMT3) | Galaxy S4 Active (SGH-i537) | |
| Battery type | LiPo: li-ion polymer (Non removable) | Li-Ion: lithium-ion (Removable) |
| Battery capacity | 4000 mAh | 2600 mAh |
| Charger, watts | 10W (5V/2A) Wired charging | 10W (5V/2A) Wired charging |
| Inductive / wireless charging | Not supported | Not supported |
| Talk time autonomy | 21 hours | 17 hours |
| Standby | 576 hours (24 days) | 312 hours (13 days) |
➕ Other features | ||
| LG K51 (K500UMT3) | Galaxy S4 Active (SGH-i537) | |
| 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, HTML5 |
| Antenna | Internal antenna | Internal antenna |
| Qwerty physical keyboard | Not supported | Not supported |
| Miscellaneous | • Colors: Titan gray • Google Assistant • DTS:X 3D sound surround • HAC M3/T3 | • Colors: Urban Grey, Dive Blue, Orange Flare • Dual Shot camera • LED notification • mDNIe • S-Voice • Group Play • Smart Stay eye tracking |
☢️ Radiation rate | ||
| LG K51 (K500UMT3) | Galaxy S4 Active (SGH-i537) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | feature not registered | 0.607W/kg (head), 1.219W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | feature not registered | 0.209W/kg (head), 0.277W/kg (body) |