Can I access my bots using my phone ?

Yes.

Self-host

The easiest way is to activate the "Reverse tunnel" in the admin settings.
Once activated, you will be able to access your application via https://<username>.me.ogame.ninja

If you want to access your application using the machine IP address, you need to start the application with the --host 0.0.0.0 flag.

Cloud

Just use your phone browser.