Charles proxy doesn't work on my IOS device

Here's what I did so far:

  1. Install Charles on my mac
  2. Connect mac and iPhone to same WiFi network
  3. Charles->Proxy->SSL Proxy Settings. Enable for *
  4. General->About->Certificate Trust Settings and enable full trust for the Charles Proxy certificate.
  5. Charles->Help->Install Charles Root Certificate on a Mobile Device
  6. Configure iPhone to proxy to IP provided in step 3.

And then when I try to go to safari on my Iphone I get a "connection lost" error and It's impossible to browse.

Any solutions ? I'm on IOS 11.4