It doesn't need to be within reach at all times. You probably barely need it at all, maybe 1% of the time. Just turn it off and leave it home unless you know you'll need it.
Your mind, that beautiful marvel of biological evolution craves for depth, give it that. Occupy your mind with something it needs - depth.
Learning more stuff is pointless after some point. Set some study time goal every week and after you are done you are free to do whatever you want.
I found it was really effective for cutting back on reddit but still being able to use it occasionally as needed.
For the more general problem—throw your phone away? What price getting your life back?? (I've never owned a mobile phone, but still have to deal with other peoples' addictions to them.)
Then regret I wish I hadn’t wasted my time and had done something productive.
I have tried a technique of locking my phone into a kitchesafe box but didn’t worked for me
So In the end I believe the problem is me I gotta really discipline myself
It helps that I grew up before cell phones were invented, younger people might not be as flexible. I can still get places with an address and town name, and a Rand McNally Atlas.
I also own an iPad - again, no notifications. I recently put Safari on a 35m/day limit. Works pretty well.
If you want to go to them you need to disable the content restrictions so is a barrier to you going to them.