Samsung Galaxy M30s vs Samsung Galaxy M31
A spec-by-spec comparison of the Samsung Galaxy M30s and the Samsung Galaxy M31, taken from their full specification sheets. Green marks the better value in each measured row.
Head to head
| Samsung Galaxy M30s | Samsung Galaxy M31 |
|---|
| Price | $150 | $178 |
| Our rating | 8/10 | 7/10 |
| Battery | 6,000 mAh | 6,000 mAh |
| Wired charging | 15W | 15W |
| RAM (max) | 6 GB | 8 GB |
| Storage (max) | 128 GB | 128 GB |
| Screen size | 6.4 in | 6.4 in |
| Main camera | 48 MP | 64 MP |
| Weight (lower is lighter) | 188 g | 191 g |
| Released | Sep 2019 | Mar 2020 |
Summary: Samsung Galaxy M30s is ahead on our rating, weight (lower is lighter). Samsung Galaxy M31 is ahead on ram (max), main camera.
★ Which should you buy? Specs are close to an even split here, so Samsung Galaxy M30s is the better buy — the extra cost of the other one isn't matched by a clear spec advantage.
Reviewed by the infozme.com Editorial Team — see how we research & rate phones.
Display
| Samsung Galaxy M30s | Samsung Galaxy M31 |
|---|
| Type | Super AMOLED, 420 nits (peak) | Super AMOLED |
| Size | 6.4 inches, 100.5 cm2 (~84.1% screen-to-body ratio) | 6.4 inches, 99.8 cm2 (~84.1% screen-to-body ratio) |
| Resolution | 1080 x 2340 pixels, 19.5:9 ratio (~403 ppi density) | 1080 x 2340 pixels, 19.5:9 ratio (~403 ppi density) |
| Protection | Corning Gorilla Glass 3 | Corning Gorilla Glass 3 |
| Brightness | — | 420 nits (typical), 800 nits (peak) |
Platform
| Samsung Galaxy M30s | Samsung Galaxy M31 |
|---|
| OS | Android 9.0 (Pie), upgradable to Android 11, One UI 3.0 | — |
| Chipset | Exynos 9611 (10nm) | Exynos 9611 (10 nm) |
| CPU | Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53) | Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53) |
| GPU | Mali-G72 MP3 | Mali-G72 MP3 |
Memory
| Samsung Galaxy M30s | Samsung Galaxy M31 |
|---|
| Card slot | microSDXC (dedicated slot) | microSDXC (dedicated slot) |
| Internal | 64GB 4GB RAM, 128GB 4GB RAM, 128GB 6GB RAM (eMMC 5.1) | 64GB 6GB RAM, 128GB 6GB RAM, 128GB 8GB RAM |
| Type | — | UFS 2.1 |
Main Camera
| Samsung Galaxy M30s | Samsung Galaxy M31 |
|---|
| Triple | 48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF; 8 MP, f/2.2, 12mm (ultrawide), 1/4.0", 1.12µm; 5 MP, f/2.2, (depth) | — |
| Features | LED flash, panorama, HDR | LED flash, panorama, HDR |
| Video | 4K@30fps, 1080p@30fps, gyro-EIS | 4K@30fps, 1080p@30fps |
| Quad | — | 64 MP, f/1.8, 26mm (wide), 1/1.72", 0.8µm, PDAF; 8 MP, f/2.2, 123˚ (ultrawide); 5 MP, f/2.4, (macro); 5 MP, f/2.2, (depth) |
Selfie Camera
| Samsung Galaxy M30s | Samsung Galaxy M31 |
|---|
| Single | 16 MP, f/2.0, 26mm (wide), 1/3.06", 1.0µm | 32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm |
| Video | 1080p@30fps | 4K@30fps, 1080p@30fps |
Battery
| Samsung Galaxy M30s | Samsung Galaxy M31 |
|---|
| Type | Li-Po 6000 mAh, non-removable | Li-Po 6000 mAh, non-removable |
| Charging | 15W wired | 15W wired |
Body
| Samsung Galaxy M30s | Samsung Galaxy M31 |
|---|
| Dimensions | 159 x 75.1 x 8.9 mm | 159.2 x 75.1 x 8.9 mm (6.27 x 2.96 x 0.35 in) |
| Weight | 188 g | 191 g (6.74 oz) |
| Build | Glass front (Gorilla Glass 3), plastic back, plastic frame | Glass front (Gorilla Glass 3), plastic back, plastic frame |
| SIM | Dual SIM (Nano-SIM, dual stand-by) | Dual SIM (Nano-SIM, dual stand-by) |
Comms
| Samsung Galaxy M30s | Samsung Galaxy M31 |
|---|
| WLAN | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct |
| Bluetooth | 5.0, A2DP, LE | 5.0, A2DP, LE |
| Positioning | GPS, GLONASS, BDS, GALILEO | GPS, GLONASS, GALILEO, BDS |
| NFC | No | Yes (market/region dependent) |
| Radio | FM radio | FM radio, RDS, recording |
| USB | USB Type-C 2.0, OTG | USB Type-C 2.0 |
Launch
| Samsung Galaxy M30s | Samsung Galaxy M31 |
|---|
| Announced | 2019, September 18 | 2020, February 25 |
| Status | Available. Released 2019, September 18 | Available. Released 2020, March 05 |
| OS | — | Android 10, upgradable to Android 12, One UI 4.1 |
Frequently asked questions
Which has more RAM, Samsung Galaxy M30s or Samsung Galaxy M31?
Samsung Galaxy M31 — 6 GB for the Samsung Galaxy M30s versus 8 GB for the Samsung Galaxy M31.
Which is lighter, Samsung Galaxy M30s or Samsung Galaxy M31?
Samsung Galaxy M30s — 188 g for the Samsung Galaxy M30s versus 191 g for the Samsung Galaxy M31.
Which is newer, Samsung Galaxy M30s or Samsung Galaxy M31?
Samsung Galaxy M31 — Sep 2019 for the Samsung Galaxy M30s versus Mar 2020 for the Samsung Galaxy M31.
Is the Samsung Galaxy M30s or the Samsung Galaxy M31 rated higher?
We rate the Samsung Galaxy M30s 8/10 and the Samsung Galaxy M31 7/10.
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