TLS1.2 and TLS1.3 support per OS and per browser
https://support.globalsign.com/ssl/general-ssl/tls-protocol-compatibility Browsers TLS 1.0 TLS 1.1 TLS 1.2 TLS 1.3 Desktop IE 11 latest version ✗ ✓ ✓ ✓ Desktop and mobile IE version 11 ✓ ✓ ✓ ✗ Desktop IE versions: 8, 9, and 10 ✓ Partial [ See Note 1 ] Partial [ See Note 1 ] ✗ Desktop IE versions 7 and below ✓ ✗ ✗ ✗ Mobile IE version 10 and below ✓ ✗ ✗ ✗ Microsoft Edge latest version ✗ ✓ ✓ ✓ Microsoft Edge ✓ ✓ ✓ ✗ Mozilla Firefox 63 or higher ✗ ✓ ✓ ✓ Mozilla Firefox 27 and higher ✓ ✓ ✓ ✗ Mozilla Firefox 23 to 26 ✓ Partial [ See Note 2 ] Partial [ See Note 2 ] ✗ Mozilla Firefox 22 and below ✓ ✗ ✗ ✗ Google Chrome 80 or higher ✗ ✓ ✓ ✓ Google Chrome 30 to 79 ✓ ✓ ✓ ✗ Google Chrome 22 to 32 ✓ Partial [ See Note 3 ] Partial [ See Note 3 ] ✗ Google Chrome 21 and below ✓ ✗ ✗ ✗ Android 10.0 or higher ✗ ✓ ✓ ✓ Android 5.0 (Lollipop) and higher ✓ ✓ ✓ ✗ Android 4.4 (Kitkat) to 4.4.4 ✓ Partial ( See Note 4 ) Partial ( See Note 4 ) ✗ Android 4.3 (Jelly Bean) and below ✓ ✗ ✗ ✗ Desktop Safari version