This mini-blog will guide you on how to install and trust your self-signed certificate on Android 11

1. Download your self-signed certificates

Android 11 requires extra steps to install and trust your self-signed certificate. Please carefully follow the guideline:

  • Download self-signed certificate: You can use Proxyman or other Proxy Tools that allows you to generate and download a self-signed certificate via local proxy server.

  • For Proxyman app, you can follow this Android Guideline to understand how to setup HTTPS Proxy from your Wifi to Proxyman.

  • Then visiting http://proxy.man/ssl to download the certificate

2. Install & Trust

  • Setting app -> Security -> Encryption & Credentials -> Install a Certificate -> Select CA Certificate option

  • Select Install Anyway

Install certificate on Android 11

  • Select Proxyman Certificate that you downloaded on your storage

Install certificate on Android 11

3. Verify that you’re trusted the certificate

  • Open Trusted Credentials -> User Tab and you can see your certificate here

Install certificate on Android 11

4. Start intercepting HTTPS Traffic

You can continue to add extra param to Android Source code in order to intercept HTTPS Traffic.


Proxyman is a high-performance macOS app, which enables developers to view HTTP/HTTPS requests from apps and domains on iOS device, iOS Simulator and Android devices.

Get it at https://proxyman.io