To play sleep sounds all night, use a device set to airplane mode with downloaded (not streamed) audio, a playlist or loop long enough to cover your whole sleep, and either no sleep timer at all or one set well past your usual wake time. The main causes of sound cutting out mid-night are weak wifi, apps pausing in the background, and timers set too short.
Download the audio instead of streaming it
Streaming depends on a stable connection. If your wifi drops for even a few seconds at 3am, some apps will pause and never resume, especially if your phone's screen has locked. Downloading tracks in advance removes this risk entirely. Most relaxation apps, including ours, let you save tracks for offline playback specifically for this reason.
Turn on airplane mode, not just do not disturb
Airplane mode stops incoming calls, texts and notifications from waking your phone's processor and interrupting playback. Do not disturb silences alerts but doesn't always stop background wifi or cellular activity that can still cause an app to hiccup. If you need an alarm, most phones let you set one even in airplane mode, so this is safe to do.
Use a genuinely long track or a proper loop, not a five-minute clip
A short sound file that loops every few minutes can create an audible seam, a tiny click or gap each time it restarts. This is often what actually wakes light sleepers, not the silence itself. Look for tracks made to run 30 minutes to several hours, or a playlist of several longer pieces queued back to back so the transitions are less frequent and less noticeable.
Set the sleep timer to outlast you, or skip it
Sleep timers exist because some people don't want sound playing for eight hours, and that's a reasonable preference. But if you're trying to avoid waking into silence, a 30 or 60 minute timer will almost certainly end before you're done sleeping. Either set the timer for your full expected sleep duration plus an hour, or turn it off and let the audio run continuously until your alarm.
Keep the volume low and steady
Sound that's loud enough to notice consciously is loud enough to disturb sleep, even if it doesn't fully wake you. Aim for a volume that's just audible over background room noise, roughly the level of a quiet conversation in another room. If you keep adjusting it up over several nights, that's usually a sign the sound is too prominent rather than not prominent enough.
Check your phone's battery and lock settings
Some phones aggressively close background apps to save battery, which can stop playback partway through the night. In your phone's settings, look for battery optimisation or background app refresh and make an exception for whichever app you're using. Plugging the phone into a charger overnight also removes one more variable.
What the evidence actually shows
Research on background sound and sleep is real but limited. Studies on white noise and pink noise for sleep exist, and some show modest benefits for people trying to fall asleep or mask disruptive environmental noise, particularly in hospital settings or noisy homes. Evidence specifically comparing music, nature sounds, and different frequencies of noise is thinner, and results vary by study design and by individual. There's no strong consensus on one
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