Oppo A1k vs Vivo Y91i
A spec-by-spec comparison of the Oppo A1k and the Vivo Y91i, taken from their full specification sheets. Green marks the better value in each measured row.
Head to head
| Oppo A1k | Vivo Y91i |
|---|
| Our rating | 6/10 | 5/10 |
| Battery | 4,000 mAh | 4,030 mAh |
| Wired charging | 10W | — |
| RAM (max) | 2 GB | 3 GB |
| Storage (max) | 256 GB | 32 GB |
| Screen size | 6.1 in | 6.22 in |
| Main camera | 8 MP | 13 MP |
| Weight (lower is lighter) | 170 g | 163 g |
| Released | Apr 2019 | Mar 2019 |
Summary: Oppo A1k is ahead on our rating, storage (max). Vivo Y91i is ahead on battery, ram (max), screen size, main camera.
★ Which should you buy? Vivo Y91i is the stronger overall pick on the measured specs.
Reviewed by the infozme.com Editorial Team — see how we research & rate phones.
Display
| Oppo A1k | Vivo Y91i |
|---|
| Type | IPS LCD | IPS LCD |
| Size | 6.1 inches | 6.22 inches, 96.6 cm2 (~82.9% screen-to-body ratio) |
| Resolution | 720 x 1560 pixels, 19.5:9 ratio (~282 ppi density) | 720 x 1520 pixels, 19:9 ratio (~270 ppi density) |
| Protection | Corning Gorilla Glass 3 | Not specified |
| Features | Capacitive, Multi-touch, Scratch resistant | — |
Platform
| Oppo A1k | Vivo Y91i |
|---|
| OS | Android 9.0 (Pie), ColorOS 6 | Android 8.1 (Oreo), Funtouch OS 4.5 |
| Chipset | MediaTek Helio P22 (MT6762) | Mediatek MT6762 Helio P22 (12 nm) |
| CPU | Octa-core (4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53) | Octa-core 2.0 GHz Cortex-A53 |
| GPU | PowerVR GE8320 | PowerVR GE8320 |
Memory
| Oppo A1k | Vivo Y91i |
|---|
| Card slot | microSDXC (dedicated slot), up to 256GB | microSDXC (dedicated slot) |
| Internal | 32GB 2GB RAM | 16GB 2GB RAM, 32GB 2GB RAM, 32GB 3GB RAM |
Main Camera
| Oppo A1k | Vivo Y91i |
|---|
| Single | 8 MP, f/2.2, 1/3.2", 1.4µm, AF | 13 MP, f/2.2, PDAF |
| Features | LED flash | LED flash, panorama |
| Video | 1080p@30fps | 1080p@30fps |
Selfie Camera
| Oppo A1k | Vivo Y91i |
|---|
| Single | 5 MP, f/2.0, 1/5.0", 1.12µm | 5 MP, f/1.8 |
| Video | 1080p@30fps (assumed, not explicitly stated in sources) | 1080p@30fps |
| Features | — | HDR |
Battery
| Oppo A1k | Vivo Y91i |
|---|
| Type | Li-Po 4000 mAh, non-removable | Li-Po 4030 mAh, non-removable |
| Charging | 10W wired | Standard charging |
Body
| Oppo A1k | Vivo Y91i |
|---|
| Dimensions | 154.5 x 73.8 x 8.4 mm (6.08 x 2.91 x 0.33 in) | 155.1 x 75.1 x 8.3 mm (6.11 x 2.96 x 0.33 in) |
| Weight | 170 g (6.00 oz) | 163 g (5.75 oz) |
| Build | Plastic body | Glass front, plastic back, plastic frame |
| SIM | Dual SIM (Nano-SIM, dual stand-by) | Dual SIM (Nano-SIM, dual stand-by) |
Comms
| Oppo A1k | Vivo Y91i |
|---|
| WLAN | Wi-Fi 802.11 b/g/n | Wi-Fi 802.11 b/g/n, Wi-Fi Direct |
| Bluetooth | 4.2, A2DP, LE | 5.0, A2DP, LE |
| Positioning | GPS, GLONASS, BDS | GPS, GLONASS, BDS |
| USB | microUSB 2.0, OTG | microUSB 2.0, OTG |
| Radio | FM radio | FM radio |
| NFC | — | No |
Launch
| Oppo A1k | Vivo Y91i |
|---|
| Announced | 2019, April | March 2019 |
| Status | Released | Available. Released March 2019 |
Frequently asked questions
Which has the better battery, Oppo A1k or Vivo Y91i?
Vivo Y91i — 4,000 mAh for the Oppo A1k versus 4,030 mAh for the Vivo Y91i.
Which has more RAM, Oppo A1k or Vivo Y91i?
Vivo Y91i — 2 GB for the Oppo A1k versus 3 GB for the Vivo Y91i.
Which is lighter, Oppo A1k or Vivo Y91i?
Vivo Y91i — 170 g for the Oppo A1k versus 163 g for the Vivo Y91i.
Which is newer, Oppo A1k or Vivo Y91i?
Oppo A1k — Apr 2019 for the Oppo A1k versus Mar 2019 for the Vivo Y91i.
Is the Oppo A1k or the Vivo Y91i rated higher?
We rate the Oppo A1k 6/10 and the Vivo Y91i 5/10.
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