HMD Skyline vs Vivo Y31d
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Quick comparison
At a glance
Key specifications and important differences. Full details follow below.
| Feature |  HMD Skyline |  Vivo Y31d |
|---|---|---|
| Price | KSh 29,000.00 | KSh 27,000 – KSh 32,500 |
| Display | 6.55 inches, 103.6 cm2 (~85.3% screen-to-body ratio); P-OLED | IPS LCD, 120Hz, 1250 nits (HBM) |
| Processor | Qualcomm SM7435-AB Snapdragon 7s Gen 2 (4 nm) | Qualcomm Snapdragon 6s 4G Gen 2 |
| RAM | 8GB, 12GB | 6GB, 8GB |
| Storage | — | 128GB, 256GB |
| Rear camera | 108 MP, f/1.8, (wide), 1/1.67", 0.64µm, PDAF, OIS; 50 MP, f/2.0, (telephoto), 1/2.76", 0.64µm, PDAF, 2x optical zoom; 13 MP, f/2.5, (ultrawide), 1/3", 1.12µm | 50 MP wide PDAF; auxiliary lens |
| Battery | 4600 mAh, user replaceable | Si/C Li-Ion 7200 mAh |
| Charging | 33W wired, PD3.0 PPS, QC4; 15W wireless (magnetic), Qi2; 5W reverse wireless | 44W wired; reverse wired; bypass charging |
| Weight | 209.5 g (7.41 oz) | 219 g |
| Operating system | Android 14, upgradable to Android 15, up to 2 major OS updates | Android 16, OriginOS 6 |
| Network | GSM / HSPA / LTE / 5G | GSM / HSPA / LTE |
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Full specifications
2 of 4 products
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General
| Specification | HMD Skyline | Vivo Y31d |
|---|---|---|
| Brand | HMD | Vivo |
| Model | Skyline | Vivo Y31d |
| Announced | 2024, July 18 | 2026, January 16 (released 2026, January) |
Design
| Specification | HMD Skyline | Vivo Y31d |
|---|---|---|
| Dimensions | 159.8 x 76 x 8.9 mm (6.29 x 2.99 x 0.35 in) | 166.6 x 78.4 x 8.4 mm |
| Weight | 209.5 g (7.41 oz) | 219 g |
| Build materials | Glass front (Gorilla Glass 3), aluminum frame, glass back | Glass front, plastic frame, plastic back |
Display
| Specification | HMD Skyline | Vivo Y31d |
|---|---|---|
| Display | 6.55 inches, 103.6 cm2 (~85.3% screen-to-body ratio); P-OLED | IPS LCD, 120Hz, 1250 nits (HBM) |
| Screen resolution | 1080 x 2400 pixels, 20:9 ratio (~402 ppi density) | 6.75 inches, 720 x 1570 pixels |
| Display protection | Corning Gorilla Glass 3 | — |
| Display features | 144Hz, 1000 nits (peak), HDR10 | 120Hz, 1250 nits |
Performance
| Specification | HMD Skyline | Vivo Y31d |
|---|---|---|
| Processor | Qualcomm SM7435-AB Snapdragon 7s Gen 2 (4 nm) | Qualcomm Snapdragon 6s 4G Gen 2 |
| CPU | Octa-core (4x2.40 GHz Cortex-A78 & 4x1.95 GHz Cortex-A55) | Octa-core (4x2.9 GHz Cortex-A73 & 4x1.9 GHz Cortex-A53) |
| GPU | Adreno 710 | Adreno |
Memory & Storage
| Specification | HMD Skyline | Vivo Y31d |
|---|---|---|
| RAM | 8GB, 12GB | 6GB, 8GB |
| Storage | — | 128GB, 256GB |
| Storage technology | — | UFS 2.2 |
| Expandable storage | microSDXC | No (no card slot) |
Cameras
| Specification | HMD Skyline | Vivo Y31d |
|---|---|---|
| Rear camera | 108 MP, f/1.8, (wide), 1/1.67", 0.64µm, PDAF, OIS; 50 MP, f/2.0, (telephoto), 1/2.76", 0.64µm, PDAF, 2x optical zoom; 13 MP, f/2.5, (ultrawide), 1/3", 1.12µm | 50 MP wide PDAF; auxiliary lens |
| Front camera | 50 MP, f/2.5, (wide), AF | 8 MP wide |
| Rear camera features | LED flash, HDR | LED flash, HDR, panorama |
| Rear camera video | 4K@30fps, 1080p@30fps, gyro-EIS | 1080p@30fps |
| Front camera video | 1080p@30/60fps | 1080p@30fps |
Battery & Charging
| Specification | HMD Skyline | Vivo Y31d |
|---|---|---|
| Battery | 4600 mAh, user replaceable | Si/C Li-Ion 7200 mAh |
| Charging | 33W wired, PD3.0 PPS, QC4; 15W wireless (magnetic), Qi2; 5W reverse wireless | 44W wired; reverse wired; bypass charging |
Software
| Specification | HMD Skyline | Vivo Y31d |
|---|---|---|
| Operating system | Android 14, upgradable to Android 15, up to 2 major OS updates | Android 16, OriginOS 6 |
Network
| Specification | HMD Skyline | Vivo Y31d |
|---|---|---|
| Network | GSM / HSPA / LTE / 5G | GSM / HSPA / LTE |
| SIM | Nano-SIM + eSIM | Nano-SIM + Nano-SIM |
Connectivity
| Specification | HMD Skyline | Vivo Y31d |
|---|---|---|
| NFC | Yes | No |
| Bluetooth | 5.2, A2DP, LE, aptX HD, aptX Adaptive | 5.1, A2DP, LE |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac/6e, dual-band | Wi-Fi 802.11 a/b/g/n/ac, dual-band |
| Positioning | GPS (L1+L5), GALILEO, GLONASS, BDS | GPS, GALILEO, GLONASS, BDS, QZSS |
| Radio | — | No |
| USB | USB Type-C 2.0, OTG | USB Type-C 2.0, OTG |
Durability
| Specification | HMD Skyline | Vivo Y31d |
|---|---|---|
| Water resistance | IP54 dust protected and water resistant (water splashes) | IP68/IP69 dust tight and water resistant |
Features
| Specification | HMD Skyline | Vivo Y31d |
|---|---|---|
| Sensors | Fingerprint (side-mounted), accelerometer, gyro, proximity, compass, barometer | Fingerprint (side-mounted), accelerometer, gyro, proximity, compass |
| Colors | Neon Pink, Twisted Black, Blue Topaz | Glow White, Starlight Grey |
Audio
| Specification | HMD Skyline | Vivo Y31d |
|---|---|---|
| Loudspeakers | Yes, with stereo speakers | Yes, with stereo speakers |
| 3.5 mm headphone jack | No | No |
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