Start outside arm's reach and make sure the sound isn't muffled. If you walk over and return to bed, move the off task to the bathroom or kitchen instead.
Across the room is a useful first experiment
If the phone is beside your face, dismissal can happen before you are properly awake. Move it to a stable surface that makes you stand. Test the sound from bed and make sure furniture or bedding isn't blocking it.
Don't put it somewhere unsafe, high, or likely to make you stumble in the dark. Keep the route clear, especially if you have mobility, balance, or vision concerns.
The best place may be where morning begins
If standing isn't enough, leave the phone audible in the room but put the barcode or photo target by the sink, coffee, or clothes. Now silence requires arriving somewhere useful.
People sharing the room need a say too. Use vibration, a wearable, or a quicker exit when possible. A good alarm location wakes you without making everyone else live inside your experiment.
Common questions
Should the phone be in another room?
Only if you can reliably hear it. Test on a low-stakes morning and keep a backup while you learn.
Is the floor a good place?
Usually not. Sound may be muffled, the phone can be stepped on, and reaching down while groggy may be unsafe.
Sources & further reading
We use primary public-health guidance and original research where the topic makes factual claims about sleep. Sources are reviewed for relevance, not used as decoration.
