How to fix Bluetooth not working on iPhone

If Bluetooth won’t turn on, won’t find a device, won’t pair, or keeps dropping on your iPhone, the safest first fixes are to check the accessory, turn Bluetooth off and back on, then pair again. If that doesn’t work, forget the accessory and re-pair it, then restart the iPhone and the accessory before you move on to a network settings reset.

First, match the problem to the right symptom

Start by matching what you’re seeing, because the next step depends on the failure mode.

If Bluetooth won’t turn on at all, the problem is usually on the iPhone side: a temporary software glitch, a settings conflict, or less commonly a hardware issue.

If Bluetooth is on but the accessory never appears, the accessory may not be in pairing mode, may already be connected to another device, or may not be discoverable.

If the accessory appears but won’t pair, the saved Bluetooth record may be stale, or the accessory may be refusing a new connection.

If it pairs and then keeps dropping, you’re usually dealing with a weak battery, interference, a stale pairing, or a connection state that needs to be rebuilt.

That first check saves time. A device that never shows up is not fixed the same way as one that connects and then falls off again.

Before you change iPhone settings, check the accessory

Before you touch the iPhone, make sure the Bluetooth accessory is actually ready to connect. In practice, a lot of “iPhone Bluetooth” problems turn out to be an accessory that isn’t really ready.

Check these basics on the headset, speaker, car system, tracker, or other device:

• It’s charged or powered on.
• It’s in pairing mode, not just turned on.
• It isn’t already connected to another phone, tablet, laptop, or car profile.
• If it has its own app, button, screen, or menu, it isn’t asking for a reset or firmware update.

If the accessory is still locked to another device, your iPhone may never see it, or it may see it briefly and then fail to pair. A common case is a speaker that keeps reconnecting to the last tablet in the room, so the iPhone never gets a clean shot at it.

If the accessory won’t power on, won’t enter pairing mode, or won’t connect to anything else either, stop blaming the iPhone for now. That usually points to the accessory itself.

Try the safest quick fix on the iPhone

The first iPhone-side fix is the least disruptive one: turn Bluetooth off and back on, then try pairing again.

1. Open Control Center or Settings and switch Bluetooth off.
2. Wait a few seconds.
3. Turn Bluetooth back on.
4. Put the accessory back into pairing mode if needed.
5. Try pairing again from Settings > Bluetooth.

Settings > Bluetooth

If the accessory appears again and connects normally, the problem was likely a temporary Bluetooth glitch or a stale scan state.

If nothing changes, don’t keep tapping around or re-scanning over and over. Move on to the saved pairing record instead of repeating the same failed attempt.

If it still won’t pair, forget the device and pair it again

If the accessory used to work with this iPhone but now won’t complete pairing, or it connects without audio or a stable link, remove the old record and set it up again. This is the right move when the phone remembers the accessory, but the connection state is bad.

1. Go to Settings > Bluetooth.
2. Find the accessory in the list.
3. Tap Forget This Device.
4. Confirm the removal.
5. Put the accessory back into pairing mode.
6. Pair it again from the Bluetooth list.

Settings > Bluetooth

This clears the old bond between the iPhone and the accessory. That often fixes cases where the accessory shows as connected but won’t pass sound, or where pairing fails partway through.

If the accessory disappears from the Bluetooth list after you forget it but still won’t show up again, the issue is probably on the accessory side rather than the iPhone side.

Restart the iPhone and the accessory

If Bluetooth still fails after a fresh pairing attempt, restart both sides. A full restart can clear a stuck wireless state that toggling Bluetooth alone won’t touch.

1. Restart the iPhone using the normal power controls for your model.
2. Power the accessory off and back on.
3. If the accessory’s manual gives a specific reset or power-cycle method, use that instead of guessing.
4. Put the accessory back into pairing mode and try again.

This step helps when the phone or accessory is stuck in a half-connected state. It’s especially useful when the iPhone shows the device as connected, but audio never routes correctly, or when the accessory seems to remember an old session that should have ended.

If a restart fixes it once but the problem comes back, that usually means there’s a persistent pairing or settings issue, not just a one-off glitch.

Check the iPhone settings that can block Bluetooth

A few iPhone settings can interfere with Bluetooth or make it look broken when it isn’t.

• Make sure Airplane Mode is off. If it was turned on, some wireless features may stay suppressed until you turn it off and reconnect.
• Check whether Low Power Mode is on. It doesn’t usually break Bluetooth, but it can make a weak connection show up more clearly.
• If the accessory depends on an app, check that the app has the permissions it needs and is up to date.
• If the issue is tied to a car system, keyboard, hearing accessory, or another setup that uses a specific app or menu, check that path too.

I’d treat these as things to rule out, not as the default explanation. If the iPhone connects to some accessories but not others, it’s less likely that a general setting is the only problem.

If Bluetooth appears to be on but the switch won’t stay on, or it turns on and off by itself, that leans more toward an iPhone software or hardware problem than a pairing issue.

Use another device to tell whether the problem is the iPhone or the accessory

The quickest way to separate an iPhone problem from an accessory problem is to test with another Bluetooth device.

If your iPhone connects fine to one accessory but not another, the phone is probably okay. That points toward the failing accessory, a compatibility issue, or a bad saved pairing on that one device.

If nothing pairs with the iPhone, the issue is more likely on the phone side, especially if the accessories are charged, in pairing mode, and known to work with other devices.

If the accessory works with another phone or tablet but not with your iPhone, that’s another clue that the iPhone-side pairing record or settings are the issue. If the accessory fails with every device, the accessory itself is the likely culprit.

That distinction matters. It keeps you from resetting the iPhone when the speaker battery is the real problem, or replacing an accessory when the saved pairing just needs to be rebuilt.

Reset network settings only if the quick fixes fail

If toggling Bluetooth, forgetting the device, and restarting both sides still don’t work, the next system-level step is a network settings reset.

On iPhone, a network settings reset clears saved Wi‑Fi networks, Bluetooth pairings, and related network configuration. It can also affect VPN-related settings or profiles tied to networking. Because of that, I wouldn’t use it early unless you’ve already ruled out the simpler fixes.

Before you do it, make sure you’re comfortable reconnecting to Wi‑Fi and setting up Bluetooth accessories again.

After the reset, pair the accessory again from scratch, check that it appears in the Bluetooth list, and test the connection right away. If the problem remains after a network reset, the issue is less likely to be a saved network state and more likely to be the accessory, its firmware, or a deeper iPhone software problem that may need a full iOS update or support from Apple or the accessory maker.

Because menus and labels can shift with iOS updates, check the current path in the Settings app before you reset anything if you’re unsure where Apple moved the option.

Confirm it worked and keep it from coming back

Don’t stop at “it connected.” Confirm the fix with a real test.

• Play audio through the accessory for a few minutes.
• Make a call if it’s a headset or car connection.
• Lock the iPhone, wait a moment, then unlock it and see whether the accessory reconnects cleanly.
• Move a little farther away and back again to check whether it drops under normal use.

If it works once but fails again after a lock screen change, a short idle period, or a walk across the room, the fix wasn’t stable. That usually means the accessory still has a weak battery, a pairing conflict, or a firmware issue.

To reduce repeat problems, keep the accessory charged, remove old pairings you no longer use, and avoid leaving it trying to connect to several devices at once. If Bluetooth works with one device but not another, keep that in mind before you reset the phone again: the bad part is often the accessory, not the iPhone.

Conclusion

If the simple fixes didn’t hold, the next best move is to focus on the accessory’s own support steps or Apple support, depending on which side failed your cross-check. Don’t keep resetting the iPhone blindly when another device test points to the accessory instead.