Day 0/90.
Failed. Early in the morning, I got a text message from a female friend whom I met online few years back and talk very rarely. I took the phone to bath to continue texting. This is the moment all my brain's addicted pathways get stronger with the bathroom's environment, and I could not stop myself peeping at her DP and get aroused. I did MO at the phone screen.
Need to take strict action to stop taking phone to bathroom.