OPPO A9 2020 vs vivo S1 Pro

Specs compared side by side, measured on real phones shared by owners with the Device Info app.

OPPO A9 2020Snapdragon 665Change
vivo S1 Provivo S1 ProSnapdragon 665Change

Key differences

  1. Screen: 6.5 inches on the A9 2020, 6.4 inches on the S1 Pro. Up to 60 Hz on the A9 2020, 61 Hz on the S1 Pro.
  2. Battery: 5,000 mAh on the A9 2020, 3,900 mAh on the S1 Pro.
  3. Software: Android 11 on the A9 2020, Android 12 on the S1 Pro (newest seen).

The same on both: the Snapdragon 665 chip and 8GB | 128GB versions.

Chipset

Chipset
Snapdragon 665Snapdragon 665
Process
11 nm11 nm
CPU
4× 2.02 GHz Kryo 260 Gold
4× 1.80 GHz Kryo 260 Silver
4× 2.02 GHz Kryo 260 Gold
4× 1.80 GHz Kryo 260 Silver
Top CPU speed
2.02 GHz2.02 GHz
CPU cores
88
GPU
Adreno 610Adreno 610

Memory

Versions seen
8GB | 128GB8GB | 128GB
RAM type
LPDDR4XLPDDR4X

Display

Size
6.5 in6.4 in
Resolution
720 × 16001080 × 2340
Pixel density
269 ppi404 ppi
Refresh rates
60 Hz61 Hz
HDR
—HDR10, HLG

Battery

Capacity
5,000 mAh3,900 mAh

Cameras

Back camera
12.1 MP4016 × 3016 · f/1.8 · 2.34 mm12.1 MP4016 × 3016 · f/1.8 · 2.4 mm
Front camera
4 MP2320 × 1744 · f/2 · 3.46 mm8 MP3264 × 2448 · f/2 · 3.85 mm

Megapixels are what Android reports to apps. Many phones combine pixels by default, so the advertised megapixels can be higher.

Connectivity

Wi-Fi
—Wi-Fi 5
6 GHz Wi-Fi
NoNo
NFC
NoNo
UWB
NoNo
USB host
YesYes

Software

Android
Android 11Android 12
Released with
Android 9Android 9
Widevine DRM
L1L3

Sensors

Sensors
23 sensors31 sensors

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From phones shared with the Device Info app · updated November 2026 Hardware specs only. No personal data. Privacy