Samsung Galaxy M31 (SM-M315F/DS 128GB/6GB) vs Samsung Galaxy J7 2018 (SM-J737U 32GB)
Side by side comparison between Samsung Galaxy M31 vs Samsung Galaxy J7 (2018) phones, differences, pros, cons and full specifications. What's the better?
,
6.4"
AMOLED
AMOLED
1080x2340
64
MP
MP
32mp
6GB
RAM
RAM
Octa-core
6000
mAh
mAh
(Non removable)
vs
5.5"
TFT
TFT
720x1280
13
MP
MP
13mp
2GB
RAM
RAM
Octa-core
3300
mAh
mAh
(Non removable)
What's the better phone? Samsung Galaxy M31 (SM-M315F/DS 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!
20 Advantages 
5 Advantages | 24 Common items in both devices |
| Until 1TB microSD, microSDXC / Until 512GB microSD, microSDXC |
| Plastic body, glass front |
| 60Hz |
| 16 million |
| LED flash |
| Only digital zoom |
| PDAF: phase detection autofocus / Autofocus |
| +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 | ||
| Galaxy M31 (SM-M315F/DS 128GB/6GB) | Galaxy J7 2018 (SM-J737U 32GB) | |
| Model | Galaxy M31 (SM-M315F/DS 128GB/6GB) | Galaxy J7 2018 (SM-J737U 32GB) |
| Other model names | Galaxy M315F/Dual-Sim (128GB + 6GB RAM) | Galaxy J7 2018 (Unlocked) SM-J737UZKAXAA |
| Country or region available |       (Latin America), (Global, International), Philippines, India, Indonesia, Malaysia |  USA |
| Brand | Samsung | Samsung |
| Release date | 3/5/2020, Announced: 2/25/2020 | 7/1/2018, Announced: 6/25/2018 |
| Depth | 8.9 millimeters (0.35 inches) | 8.6 millimeters (0.34 inches) |
| Size (width x height) | 75.1 x 159.2 millimeters (2.96 x 6.27 in) | 76.2 x 153.2 millimeters (3 x 6.03 in) |
| Weight | 191 grams (6.69 ounces) | 181 grams (6.34 ounces) |
| Build, materials | Plastic body, glass front | Plastic body, glass front |
| Protection against water and others | Not supported | Not supported |
📲 Display | ||
| Galaxy M31 (SM-M315F/DS 128GB/6GB) | Galaxy J7 2018 (SM-J737U 32GB) | |
| Display type | Super AMOLED | TFT LCD |
| Screen size | 6.4" inches | 5.5" inches |
| Screen-to-body ratio | ~84.1% (screen-to-body ratio) | ~71.4% (screen-to-body ratio) |
| Display resolution | 1080x2340 pixels (19.5:9) | 720x1280 pixels |
| Touchscreen | Capacitive Multitouch | Capacitive Multitouch |
| Pixel density (dot pitch) | 403 PPI | 267 PPI |
| Colors | 16 million | 16 million |
| Scratch-resistant glass | Gorilla Glass 3 | Gorilla Glass 5 |
| Refresh rate | 60Hz | 60Hz |
| Display features | 420nits[peak] | Not supported |
🤖 Operating System | ||
| Galaxy M31 (SM-M315F/DS 128GB/6GB) | Galaxy J7 2018 (SM-J737U 32GB) | |
| System version | Android 10 | Android 8.0 Oreo |
| Firmware update | Android 11 | Android 9.0 Pie |
| User Interface | feature not registered | One UI |
⚙️ Processor | ||
| Galaxy M31 (SM-M315F/DS 128GB/6GB) | Galaxy J7 2018 (SM-J737U 32GB) | |
| Chipset | 64bit: Samsung Exynos 9611 (10nm) | 64bit: Samsung Exynos 7870 (14nm) |
| CPU | Octa-core, 2 processors: 4x 2.3GHz ARM Cortex-A73 (Quad-core) 4x 1.7GHz ARM Cortex-A53 (Quad-core) | Octa-core, 1 processor: 8x 1.6GHz ARM Cortex-A53 (Octa-core) |
| GPU graphical controller | ARM Mali-G72 MP3 (850MHz) | ARM Mali-T830 MP1 (700MHz) |
| Performance (benchmark) | feature not registered | feature not registered |
💽 Memory and storage | ||
| Galaxy M31 (SM-M315F/DS 128GB/6GB) | Galaxy J7 2018 (SM-J737U 32GB) | |
| RAM memory | 6GB LPDDR4X | 2GB LPDDR3 |
| Internal storage | 128GB (108GB available) UFS 2.1 | 32GB (22GB available) eMMC 5.1 |
| External storage | Until 1TB microSD, microSDXC (dedicated slot) | Until 512GB microSD, microSDXC (dedicated slot) |
📶 Mobile networks | ||
| Galaxy M31 (SM-M315F/DS 128GB/6GB) | Galaxy J7 2018 (SM-J737U 32GB) | |
| Dual-SIM | Dual-SIM Standby - Call active on one sim card (dedicated slot) | Not supported |
| SIM card | 2 slots (Dual-SIM) nano-SIM (4FF) | 1 slot (Single-SIM) nano-SIM (4FF) |
| Maximum Download / Upload | 600/150 Mbps | 300/50 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 850/900/1700/1900/2100 | UMTS 850/1700/1900/2100 |
| Primary 4G network | LTE Cat12/13 (1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 66) TD-LTE (38, 40, 41) VoLTE | LTE Cat6 (1, 2, 3, 4, 5, 7, 12, 66) |
| 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, LTE-A |
| 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 | ||
| Galaxy M31 (SM-M315F/DS 128GB/6GB) | Galaxy J7 2018 (SM-J737U 32GB) | |
| Back camera (main camera) | (quad camera) 64 megapixels 8MP ultrawide f/2.212mm1/4.0"1.12µm 5MP macro f/2.425mm1/5.0"1.12µm 5MP depth f/2.2 | 13 megapixels |
| Main camera resolution | 10120x6328 pixels | 4128x3096 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/1.7 (aperture) |
| Focal length | 26mm lens | feature not registered |
| Sensor size | 1/1.72" inches | feature not registered |
| Pixel size | 0.8µm 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 on both cameras |
| Camera extras | feature not registered | feature not registered |
📸 Front camera | ||
| Galaxy M31 (SM-M315F/DS 128GB/6GB) | Galaxy J7 2018 (SM-J737U 32GB) | |
| Front camera (secondary) | 32 megapixels | 13 megapixels |
| Front camera resolution | 6528x4896 pixels | 4128x3096 pixels |
| Video recording (secondary) | 4K UHD (3840x2160) | Full HD (1920x1080) |
| Front flash | Not supported | Not supported |
| Focal aperture | f/2.0 (aperture) | f/1.7 (aperture) |
| Focal length | 26mm lens | feature not registered |
| Sensor size | 1/2.8" inches | feature not registered |
| Pixel size | 0.8µm pixel | feature not registered |
🔉 Sound and multimedia | ||
| Galaxy M31 (SM-M315F/DS 128GB/6GB) | Galaxy J7 2018 (SM-J737U 32GB) | |
| Loudspeaker | Supported | Mono sound (not stereo) |
| 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.265, H.264, H.263, XviD, MKV |
| Audio formats | MP3, WAV, WMA, eAAC+, FLAC | MP3, WAV, WMA, eAAC+, FLAC |
🔌 Connectivity | ||
| Galaxy M31 (SM-M315F/DS 128GB/6GB) | Galaxy J7 2018 (SM-J737U 32GB) | |
| 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 | Not supported |
| Bluetooth | 5.0 + A2DP/LE | 4.2 + 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 | Not supported |
| GPS | A-GPS, GeoTagging, GLONASS, GALILEO, BeiDou | A-GPS, GeoTagging, GLONASS |
| NFC | Not supported | Not supported |
| Infrared port | Not supported | Not supported |
🧭 Sensors | ||
| Galaxy M31 (SM-M315F/DS 128GB/6GB) | Galaxy J7 2018 (SM-J737U 32GB) | |
| Sensors | Accelerometer Ambient light sensor Compass Face unlock Fingerprint sensor (rear-mounted) Gyroscope | Accelerometer Ambient light sensor ANT+ Compass Face unlock Gyroscope Proximity sensor |
| Vibrating alert | Supported | Supported |
🔋 Battery | ||
| Galaxy M31 (SM-M315F/DS 128GB/6GB) | Galaxy J7 2018 (SM-J737U 32GB) | |
| Battery type | LiPo: li-ion polymer (Non removable) | Li-Ion: lithium-ion (Non removable) |
| Battery capacity | 6000 mAh | 3300 mAh |
| Charger, watts | 15W Wired fast charging | Wired charging |
| Inductive / wireless charging | Not supported | Not supported |
| Talk time autonomy | feature not registered | 31 hours (1.3 days) |
| Standby | feature not registered | 768 hours (32 days) |
➕ Other features | ||
| Galaxy M31 (SM-M315F/DS 128GB/6GB) | Galaxy J7 2018 (SM-J737U 32GB) | |
| 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: Ocean Blue, Space Black, Red • One UI 2.0, 3.1 | • Colors: Black, Gold |
☢️ Radiation rate | ||
| Galaxy M31 (SM-M315F/DS 128GB/6GB) | Galaxy J7 2018 (SM-J737U 32GB) | |
| SAR 1.6W/kg (USA, Mexico, etc.) | 0.52W/kg (head), 0.69W/kg (body) | 1.36W/kg (head), 1.58W/kg (body) |
| SAR 2W/kg (Europe, UK, etc.) | 0.482W/kg (head), 1.127W/kg (body) | feature not registered |