Can I use
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tabindex global attribute

- LS

Specifies the focusability of the element and in what order (if any) it should become focused (relative to other elements) when "tabbing" through the document.

Chrome

  1. ﹖ 4 - 14: Support unknown
  2. ✅ 15 - 135: Supported
  3. ✅ 136: Supported
  4. ✅ 137 - 139: Supported

Edge

  1. ✅ 12 - 135: Supported
  2. ✅ 136: Supported

Safari

  1. ﹖ 3.1 - 5: Support unknown
  2. ✅ 5.1 - 18.4: Supported
  3. ✅ 18.5: Supported
  4. ✅ TP: Supported

Firefox

  1. ﹖ 2 - 3.6: Support unknown
  2. ✅ 4 - 137: Supported
  3. ✅ 138: Supported
  4. ✅ 139 - 141: Supported

Opera

  1. ﹖ 9: Support unknown
  2. ✅ 9.5 - 116: Supported
  3. ✅ 117: Supported

IE

  1. ﹖ 5.5 - 6: Support unknown
  2. ✅ 7 - 10: Supported
  3. ✅ 11: Supported

Chrome for Android

  1. ✅ 136: Supported

Safari on iOS

  1. ✅ 3.2 - 18.4: Supported
  2. ✅ 18.5: Supported

Samsung Internet

  1. ﹖ 4 - 26: Support unknown
  2. ﹖ 27: Support unknown

Opera Mini

  1. ﹖ all: Support unknown

Opera Mobile

  1. ﹖ 10 - 12.1: Support unknown
  2. ✅ 80: Supported

UC Browser for Android

  1. ✅ 15.5: Supported

Android Browser

  1. ﹖ 2.1 - 4.4.4: Support unknown
  2. ﹖ 136: Support unknown

Firefox for Android

  1. ✅ 137: Supported

QQ Browser

  1. ✅ 14.9: Supported

Baidu Browser

  1. ✅ 13.52: Supported

KaiOS Browser

  1. ✅ 2.5: Supported
  2. ✅ 3: Supported

Mac OS X "Full Keyboard Access" refers to setting Keyboard→Shortcuts→Full Keyboard Access to "All controls" in the System Preferences.

"Unknown" support for mobile browsers is due to lacking a method of tabbing through fields.

Resources:
MDN Web Docs - tabindex attribute