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Dual-Mode
5G Chip
Fast, Stable, and Efficient
Remarkable performance powered by a 7nm 5G chip & an octa-core Dimensity 700 with speeds up to 2.2 GHz. 1,2
7times faster
(compared with 4G) 3
Download speed
7nm
Process  
supports
SA/NSA
dual-mode 5G 4,5
Network mode
Extended
RAM 2.0
Our innovative Extended RAM 2.0 technology draws up to 6GB from ROM to add to RAM. This supports more active apps in the background and ensures that you can always switch smoothly between apps. 6,7
25
Number of
background apps that
can be supported 8
1TB
Memory expansion
supported 9
Sharp Images
50MP Main Rear Camera
Ultra-sharp images, no matter day or night. 15
Main Camera
50MP
Bokeh Camera
2MP
Macro Camera
2MP
Bokeh Camera
Complemented by portrait bokeh algorithm to take sharper photos with richer contrasts effortlessly.
Macro Camera
Discover mini wonders at 4cm away.
Clearer Images
in Low Light
Stunning bright and clear pictures, no matter whether in low light or extreme night conditions.
Super Night Mode
Now available on both front and rear cameras so that no matter what direction you shoot in, it's always bright and clear.
AI Face Beauty
Optimize more aspects, from your skin tone, face shape to facial features and more with our upgraded algorithm.
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Widgets
A quick glance gives you all the key information you need, regrouped for easier access.
Ultra Game
Mode 2.0
Get a fuller sensory gaming experience, with more CPU and power saving features to keep you gaming on.
4D Game
Vibration 16
Game Picture-
in-Picture
Do Not
Disturb
Multi-Turbo 5.0
Run multiple apps or play graphic-intensive games smoothly without hiccups.
Liquid Cooling Solution Across Five Components
iManager
Your Mobile Butler
Keep your phone safe and secure, without the threat of viruses or malicious files.

Disclaimer:

  • All data is based on our technical design parameters, laboratory test results and supplier test data. Actual performance may vary depending on software version, specific test environment and phone model. All comparisons shown on this page refer to vivo products only.
  • Two large A76 cores (2.2GHz) + six small A55 cores (2.0GHz)
  • Y55s 5G draws power from a Dimensity 700 chip to enable a maximum theoretical downlink bandwidth up to 2.74 Gbps on 5G network, which is 7 times higher than the maximum downlink bandwidth of 391 Mbps on 4G network. Network conditions vary with factors such as 5G network signals and polices of carriers. The actual network speed shall prevail.
  • SA mode availability depends on local carriers’ network situations. Once officially launched, it will be sent through OTA updates.
  • Functioning 5G is subject to specific carrier’s 5G availability in the local market, as well as phone specifications. For more information, please consult your carrier.
  • 4GB extended RAM is achieved through software.
  • Actual available RAM/ROM is less due to the storage of operating system and pre-installed apps.
  • The number of active apps varies as different apps use different amounts of RAM. The more RAM the apps use, the smaller the number of active apps, and vice versa. As tested in our laboratory, the maximum number of active apps is 25, and the average number is 21. Extended RAM 2.0 (8GB + 4GB) enables higher overall performance than the last generation of Extended RAM (8GB + 3GB).
  • Supports memory expansion of up to 1TB. Micro SD card needs to be purchased separately.
  • Data is based on vivo laboratory environmental tests. Test environment: ambient and phone temperature of 25℃±1℃. Test condition: full power with a typical battery capacity of 5000mAh, Wi-Fi connection, 150cd/m² screen brightness and 63dB(A) volume. Online binge-watching: Under the preceding test conditions, Y55s 5G can play YouTube videos with default settings for a continuous time of up to 20 hours. Gaming: Under the preceding test conditions, Y55s 5G can play PUBG with default settings for a continuous time of up to 10 hours. Instagram: Under the preceding test conditions, Y55s 5G can play Instagram short videos with default settings for a continuous time of up to 18 hours.
  • Y55s 5G is equipped with a vivo standard charger (power adapter 9V/2A), and supports up to 18W Fast Charge. The actual charging power is dynamically adjusted as the scene changes, and subject to actual usage.
  • Actual dimensions and weight may differ due to variations in processes, measurement method, and material supplies.
  • Measured diagonally, the screen size is 6.58-inch in the full rectangle. Actual display area is slightly smaller.
  • Eye Protection mode must be enabled for the blue light filtering feature to work.
  • The pixel value may vary under different camera modes, and is subject to actual usage.
  • 4D Game Vibration is only available for PUBG.
  • The product pictures and features shown are for reference only, the images shown on the display screen are simulated, and for demonstration purposes only. Please take actual products as standard.
  • As some specifications, parameters, or parts of the product may vary due to supplier change or different production batches, vivo may update the descriptions on this page accordingly without giving any prior notice. Please read this page carefully before use.