If you are trying to delete DNS case then you must know the Chrome.//net-internals/DNS Mobile, yes, this is the url that you can use and delete your DNS cache very easily. Here is the few steps that you have to follow to use Chrome.//net-internals/DNS Mobile

Open your device and go to chrome browser

Then type Chrome.//net-internals/DNS carefully.

Then follow few more on-screen instruction

That's it.