Mobile certificate


I wanted to refresh my old phone (LG G5 / Android 8). I did use the « clear credentials/remove all certificates » option.

However now i can’t login into some apps, and almost every website gives me an http warning. Almost no website will work now.

I would like to know how to reinstall those certificates ?

Thank you!

Answer these questions to help the Community help you with Security questions.

What is the domain name?
Every website

Have you searched for an answer?


Please share your search results url:

When you tested your domain, what were the results?

Describe the issue you are having:

What error message or number are you receiving?
Http error

What steps have you taken to resolve the issue?

Was the site working with SSL prior to adding it to Cloudflare?

What are the steps to reproduce the error:

Have you tried from another browser and/or incognito mode?

Please attach a screenshot of the error:

Are you using the app with WARP enabled? If so, you can temporarily switch to DNS only mode ( Android mobile client · Cloudflare WARP client docs ) or disable entirely via the app itself.

Then, you can retrace the installation steps to re-install the VPN profile/certificates so you can use again: