Samsung Galaxy A18 4G 256GB vs Vivo Y31d
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Quick comparison
At a glance
Key specifications and important differences. Full details follow below.
| Feature |  Samsung Galaxy A18 4G 256GB |  Vivo Y31d |
|---|---|---|
| Price | KSh 30,000.00 | KSh 27,000 – KSh 32,500 |
| Display | 6.7 inches: Super AMOLED, 90Hz | IPS LCD, 120Hz, 1250 nits (HBM) |
| Processor | Exynos 1610 | Qualcomm Snapdragon 6s 4G Gen 2 |
| RAM | 4GB, 6GB | 6GB, 8GB |
| Storage | 128GB | 128GB, 256GB |
| Rear camera | 50 MP, f/1.8, (wide), 1/2.76", 0.64µm, AF, OIS 5 MP, f/2.2, (ultrawide), 1/5.0", 1.12µm 2 MP (macro) | 50 MP wide PDAF; auxiliary lens |
| Battery | 5000 mAh | Si/C Li-Ion 7200 mAh |
| Charging | 25W wired | 44W wired; reverse wired; bypass charging |
| Weight | 196 g (6.91 oz) | 219 g |
| Operating system | Android 17, up to 6 major OS updates, One UI 9 | Android 16, OriginOS 6 |
| Network | GSM / HSPA / LTE | GSM / HSPA / LTE |
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Full specifications
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General
| Specification | Samsung Galaxy A18 4G 256GB | Vivo Y31d |
|---|---|---|
| Brand | Samsung | Vivo |
| Model | Galaxy A18 4G | Vivo Y31d |
| Announced | 2026, September 15 | 2026, January 16 (released 2026, January) |
Design
| Specification | Samsung Galaxy A18 4G 256GB | Vivo Y31d |
|---|---|---|
| Dimensions | 164.4 x 77.9 x 7.7 mm (6.47 x 3.07 x 0.30 in) | 166.6 x 78.4 x 8.4 mm |
| Weight | 196 g (6.91 oz) | 219 g |
| Build materials | Glass front (Gorilla Glass 3), plastic back, plastic frame | Glass front, plastic frame, plastic back |
Display
| Specification | Samsung Galaxy A18 4G 256GB | Vivo Y31d |
|---|---|---|
| Display | 6.7 inches: Super AMOLED, 90Hz | IPS LCD, 120Hz, 1250 nits (HBM) |
| Screen resolution | 1080 x 2340 pixels, 19.5:9 ratio (~385 ppi density) | 6.75 inches, 720 x 1570 pixels |
| Display protection | Corning Gorilla Glass Victus+, Mohs level 5 | — |
| Display features | Super AMOLED, 90Hz | 120Hz, 1250 nits |
Performance
| Specification | Samsung Galaxy A18 4G 256GB | Vivo Y31d |
|---|---|---|
| Processor | Exynos 1610 | Qualcomm Snapdragon 6s 4G Gen 2 |
| CPU | Octa-core (2x2.4 GHz Cortex-A7X & 6x2.0 GHz Cortex-A55) | Octa-core (4x2.9 GHz Cortex-A73 & 4x1.9 GHz Cortex-A53) |
| GPU | Mali-G57 MC2 | Adreno |
Memory & Storage
| Specification | Samsung Galaxy A18 4G 256GB | Vivo Y31d |
|---|---|---|
| RAM | 4GB, 6GB | 6GB, 8GB |
| Storage | 128GB | 128GB, 256GB |
| Storage technology | — | UFS 2.2 |
| Expandable storage | microSDXC (uses shared SIM slot) | No (no card slot) |
Cameras
| Specification | Samsung Galaxy A18 4G 256GB | Vivo Y31d |
|---|---|---|
| Rear camera | 50 MP, f/1.8, (wide), 1/2.76", 0.64µm, AF, OIS 5 MP, f/2.2, (ultrawide), 1/5.0", 1.12µm 2 MP (macro) | 50 MP wide PDAF; auxiliary lens |
| Front camera | 13 MP, f/2.0, (wide), 1/3.1", 1.12µm | 8 MP wide |
| Rear camera features | LED flash, panorama, HDR | LED flash, HDR, panorama |
| Rear camera video | 1080p@30fps | 1080p@30fps |
| Front camera features | HDR | — |
| Front camera video | 1080p@30fps | 1080p@30fps |
Battery & Charging
| Specification | Samsung Galaxy A18 4G 256GB | Vivo Y31d |
|---|---|---|
| Battery | 5000 mAh | Si/C Li-Ion 7200 mAh |
| Charging | 25W wired | 44W wired; reverse wired; bypass charging |
Software
| Specification | Samsung Galaxy A18 4G 256GB | Vivo Y31d |
|---|---|---|
| Operating system | Android 17, up to 6 major OS updates, One UI 9 | Android 16, OriginOS 6 |
Network
| Specification | Samsung Galaxy A18 4G 256GB | Vivo Y31d |
|---|---|---|
| Network | GSM / HSPA / LTE | GSM / HSPA / LTE |
| SIM | Nano-SIM + Nano-SIM | Nano-SIM + Nano-SIM |
Connectivity
| Specification | Samsung Galaxy A18 4G 256GB | Vivo Y31d |
|---|---|---|
| NFC | Yes (market/region dependent) | No |
| Bluetooth | 5.3, A2DP, LE | 5.1, A2DP, LE |
| Wi-Fi | 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 |
| Positioning | GPS, GALILEO, GLONASS, BDS, QZSS | GPS, GALILEO, GLONASS, BDS, QZSS |
| Radio | FM radio (market/region dependent) | No |
| USB | USB Type-C 2.0 | USB Type-C 2.0, OTG |
| Ultra Wideband (UWB) | Not Supported | — |
| Satellite features | Not Supported | — |
Durability
| Specification | Samsung Galaxy A18 4G 256GB | Vivo Y31d |
|---|---|---|
| Water resistance | IP64 dust protected and water resistant (water splashes) | IP68/IP69 dust tight and water resistant |
Features
| Specification | Samsung Galaxy A18 4G 256GB | Vivo Y31d |
|---|---|---|
| Sensors | Fingerprint (side-mounted), accelerometer, compass Virtual proximity sensing | Fingerprint (side-mounted), accelerometer, gyro, proximity, compass |
| Colors | Gray, Light Blue, Black | Glow White, Starlight Grey |
Audio
| Specification | Samsung Galaxy A18 4G 256GB | Vivo Y31d |
|---|---|---|
| Loudspeakers | Yes | Yes, with stereo speakers |
| 3.5 mm headphone jack | No | No |
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