Can I use
?

Network Information API

- UNOFF

The Network Information API enables web applications to access information about the network connection in use by the device. Accessed via navigator.connection

IE

  1. 5.5 - 10: Not supported
  2. 11: Not supported

Edge

  1. 12 - 18: Not supported
  2. 79 - 85: Partial support
  3. 86: Partial support

Firefox

  1. 2 - 80: Not supported
  2. 81: Not supported
  3. 82 - 83: Not supported

Chrome

  1. 4 - 60: Not supported
  2. 61 - 85: Partial support
  3. 86: Partial support
  4. 87 - 89: Partial support

Safari

  1. 3.1 - 13.1: Not supported
  2. 14: Not supported
  3. TP: Not supported

Opera

  1. 9 - 47: Not supported
  2. 48 - 70: Partial support
  3. 71: Partial support

iOS Safari

  1. 3.2 - 13.7: Not supported
  2. 14: Not supported

Opera Mini

  1. all: Not supported

Android Browser

  1. 2.1: Not supported
  2. 2.2 - 4.3: Partial support
  3. 4.4 - 4.4.4: Not supported
  4. 81: Supported

Blackberry Browser

  1. 7: Not supported
  2. 10: Not supported

Opera Mobile

  1. 10 - 12.1: Not supported
  2. 59: Partial support

Chrome for Android

  1. 85: Supported

Firefox for Android

  1. 79: Supported

IE Mobile

  1. 10: Not supported
  2. 11: Not supported

UC Browser for Android

  1. 12.12: Not supported

Samsung Internet

  1. 4: Partial support
  2. 5 - 7.4: Partial support
  3. 8.2 - 11.2: Supported
  4. 12.0: Supported

QQ Browser

  1. 10.4: Supported

Baidu Browser

  1. 7.12: Partial support

KaiOS Browser

  1. 2.5: Partial support
Resources:
(NetInfo) Capability reporting with ServiceWorker