i just spent 2 weeks with fully no phone. phone addiction comes back quick but it was a great experience. recommend making time/planning to do it, or to just do it spontaneously like break your phone, like me.
get a notebook, a pen
get really into packing your bag so you always have things to entertain u
enjoy waking up to the sound of birds
if you dont make time to do it, you will have a phone with you till the day you die, or the collapse of society strips it from you.