adb push ca.crt /sdcard/ adb shell cmd certificate install /sdcard/ca.crt Use DPC (Device Policy Controller) or managed configurations – end users cannot install certs themselves. Troubleshooting | Problem | Likely fix | |---------|-------------| | Certificate not visible in Wi‑Fi config | You installed as “CA certificate” → use CA field; if “User certificate” missing, reinstall as Wi‑Fi certificate ( .p12 ) | | “Certificate not trusted” | Install the full chain (root + intermediate) as CA | | Can’t install .p12 | Convert to .pem + .key then use external tools like OpenSSL or install via “VPN & app user cert” | | Android 14+ blocks old certs | Need SHA-256, RSA 2048+, validity < 825 days | Sample OpenSSL commands (for devs) Convert .p12 to .pem (cert + key):
openssl pkcs12 -in client.p12 -out client.pem -nodes Extract CA cert from a .p12 : download wifi certificate for android
openssl pkcs12 -in client.p12 -cacerts -nokeys -out ca.crt This guide should work for . Enterprise environments using EAP-TLS require both a user certificate ( .p12 ) and the root CA certificate installed separately. adb push ca