LINE App Gone Quiet? A Guide to Calls, Voice Notes and Alerts
LINE going quiet is a strange kind of silence: the app looks fine, messages arrive, calls connect, voice notes play — and you hear nothing. It’s almost never a broken speaker: LINE has three kinds of sound — calls, voice messages, and alerts — and each breaks in its own way, so first work out which one has gone missing. Once you know that, the fix is usually a single setting.
The Call Where Nobody Hears Anybody
Here’s the complaint that keeps coming up from iPhone users: a LINE call connects, both people say hello, and neither side hears a thing. It comes and goes — one call is fine, the next is dead silent — and it has followed people across several iPhone models. If that’s your symptom, start with the speakerphone test: during a silent call, tap the speaker icon once. If voices suddenly appear through the loudspeaker, the earpiece path is the problem, not the call itself.
Next, look at how LINE hands calls to your iPhone. LINE can pass its calls through the iPhone’s own phone system, and that handover is where the silence often starts. In LINE, open Settings, then Calls, and switch the iPhone integration option off. Make a test call from inside LINE itself — plenty of people have found this one toggle fixes it.
While you’re there, make sure Receive Voice Calls is switched on — without it, incoming calls may not ring at all. Then switch from Wi-Fi to mobile data and call the same person again: if it works on one network and not the other, the network is dropping the call audio.
Voice Notes and the Earpiece Trap
Voice messages have their own trap: you press play, the waveform moves, and nothing comes out — yet the phone plays music perfectly. The message is probably playing through the earpiece. Hold the phone to your ear and you’ll hear it faintly, which is how it’s designed to work, but if you’re expecting speaker sound it feels broken.
Tap the speaker icon on the voice message to force it through the loudspeaker, then press volume up several times while it’s playing. Media volume is a separate slider from ringtone volume, and it can sit at zero while your phone rings loudly — that’s the most common reason a voice message plays in silence. If it still won’t play, ask the sender to record a fresh one: a message recorded in a bad signal area can arrive damaged, and no setting on your phone can repair a broken file. Turning the speaker output off and back on during playback sometimes helps too — a stuck audio session occasionally needs that nudge before it hands the sound back.
Why LINE Never Rings
A LINE that never rings is usually a notification problem, not a sound problem, and there are two layers to check. Start inside the app: open LINE, go to Settings, then Notifications, and make sure notifications are switched on and the sound is set to a real tone rather than None. A tone of None gives you exactly the symptom people describe — messages arrive on screen, nothing is heard.
Then check whether a single chat is muted: LINE lets you silence one conversation without touching anything else, and a muted group stays silent for weeks. Open the quiet chat, tap its name at the top, and check its notification setting — if a one-to-one chat rings and the group doesn’t, you’ve found your answer.
The phone adds a second layer above the app. On Android, open Settings, then Apps, then LINE, then Notifications, and confirm each category is allowed. On iPhone, go to Settings, then Notifications, then LINE, and make sure Allow Notifications, Sounds, and Banners are all on. When the app and the system disagree, the system wins.
Battery Saving Silences LINE in the Background
This one catches Android users most. Phones that save battery aggressively can stop LINE from waking up when a call or message arrives, so the alert only appears when you open the app yourself. If your LINE only rings when the app is already open, this is almost certainly the cause.
Open Settings, then Apps, then LINE, then Battery, and make sure the app isn’t restricted from running in the background — and allow background data too, so LINE can receive alerts promptly even when you haven’t opened it in hours. On iPhone, the equivalent is Background App Refresh: if it’s off for LINE, notifications can arrive late or silently after the phone has been idle.
Bluetooth and the Wrong Speaker
Bluetooth is the quiet thief in every one of these guides, and LINE is no exception. Earbuds sitting in their case, a car stereo from this morning’s drive, a smart speaker in the next room — any of them can claim LINE’s call audio while your phone stays silent. The app looks normal, the call timer runs, and the sound is playing somewhere you can’t hear it.
Turn Bluetooth off completely and make a test call. If the voice comes back, a paired device was grabbing the audio. Fix the specific device instead: open Settings, then Bluetooth, tap the info icon next to it, and switch off call audio while keeping media audio if you still want music through it.
If the speaker sounds faint in every app, run the free speaker test on Fix My Speaker — a clear tone means the fault is in the app.
When the App Itself Needs a Fresh Start
If calls, voice messages, and notifications are all still silent after everything above, the installation itself may be damaged. Force-close LINE completely, reopen it, and test a call. Then check for an update — audio bugs get fixed in updates all the time, and an outdated build can lose sound after a phone system update.
On Android, clear the cache under Settings, then Apps, then LINE, then Storage. On iPhone, offload the app from iPhone Storage and reinstall it.
Only reinstall as a last step, and back up your chats first through LINE Settings, then Chats, then Backup. Uninstall LINE, install a fresh copy, sign in, restore your backup, and grant permissions when asked. If LINE alone stays silent, contact LINE support — and avoid unofficial LINE versions, since they can break notifications and put your account at risk.
Frequently Asked Questions
Why do LINE calls connect but neither side can hear anything?
Try the speakerphone toggle during the call, switch off the iPhone integration setting under LINE Settings then Calls, and test on mobile data instead of Wi-Fi.
Why do LINE voice messages play with no sound?
The message is probably playing through the earpiece. Tap the speaker icon, then press volume up while it plays to raise the media volume, which is separate from ringtone volume.
Why does LINE never ring for incoming calls?
Check Receive Voice Calls in LINE’s call settings, the notification sound in LINE Settings then Notifications, and your phone’s notification permission for LINE. On Android, battery optimisation can also stop LINE waking up.
Will reinstalling LINE delete my chats?
It can, so back up your chats first through LINE Settings, then Chats, then Backup. After reinstalling and restoring, test a call and a voice message.