I had a brain blast last month, took this a step further and bought a sleep mask. Super effective since it forces my eyes closed as a constant reminder to sleep.
So as you know, I'm pretty obsessed with my sleep. Which has gotten me into some difficulty because the new place I moved to is at the intersection of crackheads and bored children off school for the summer. I just got a fan for the white noise a while ago, which helps immensely. But the biggest help has been the blinds that are installed and the heavy drapes I hung behind them. I'm also planning on installing a small hanging shelf right outside my bedroom door near an outlet at hip-level. That's where I'll leave my phone every night before entering my room. I'll have a battery-powered analog alarm clock inside. I'm at pretty near darkness.
Good move with the heavy drapes in combo with the fan, and I might take a page from your book in setting the phone away from the bed. I can relate to where the drapes and blinds come in clutch. There's a mustang without a muffler that parks outside my own and my roommates' window. His regular 5 AM drives are much easier to sleep through with a black out curtain and closed blinds on my end.