A Galaxy S23 that will not pair, or that drops earbuds and car audio, is usually fixed by forgetting the accessory on both ends and pairing it again. The S23 uses Bluetooth 5.3, so most accessories made in the last decade work with it. Check the accessory's own battery and whether another device has grabbed the connection before you reset anything on the phone, and clear the Bluetooth app cache before a network reset.
Differential
Likely causes of “Samsung Galaxy S23 will not pair or stay connected over Bluetooth”, and how to tell them apart
- 1
A stale pairing record
What separates it The accessory is listed but will not connect
How to confirm Unpair on the S23 and on the accessory, then pair fresh
- 2
The accessory is connected to another device
What separates it Earbuds jump to a laptop or tablet
How to confirm Turn Bluetooth off on the other device, or forget the S23 there if it fights
- 3
A low accessory battery
What separates it Stutter and cut-outs that clear when the case is charged
How to confirm Charge the accessory fully and retry
- 4
2.4 GHz interference
What separates it Dropouts near a router, microwave or crowded space
How to confirm Move away; switch the router to 5 GHz
- 5
A Bluetooth system cache fault
What separates it Nothing pairs on any accessory
How to confirm Settings, Apps, Show system apps, Bluetooth, Storage, Clear cache
- 6
Power saving interfering
What separates it Bluetooth drops when the battery is low or Power saving mode is on
How to confirm Settings, Battery, Power saving: turn it off or exempt the accessory's app
Before you touch a setting
Record this first — changing settings destroys the evidence
- Accessory make and model, and its firmware version
- Whether it fails to pair or drops after pairing
- Whether another phone pairs with the same accessory
- One UI version and patch date
Try in this order
0 of 6 completedUnpair and pair again
ReversibleSettings, Connections, Bluetooth, tap the gear beside the accessory, Unpair, then put the accessory in pairing mode and pair.
Restart both
ReversibleRestart the phone and power-cycle the accessory.
Clear the Bluetooth cache
ReversibleSettings, Apps, three dots, Show system apps, Bluetooth, Storage, Clear cache, then restart.
Update firmware
ReversibleUpdate the accessory through its app and install the latest One UI patch.
Reset network settings
Reset / data riskSettings, General management, Reset, Reset network settings. This clears Wi-Fi, mobile and Bluetooth settings.
Cross-test
ReversiblePair a second accessory. If it works, the first accessory is the problem.
Model-specific
What is true of this model and not of its siblings
- The S23's radio
- Bluetooth 5.3 on a 6.1-inch phone with a 3,900 mAh battery; power saving is more likely to cut Bluetooth idle links on this model than on the S23+.
- Galaxy accessories
- Galaxy Buds and Galaxy Watch reconnect and update through the Galaxy Wearable app; Auto Switch can move the buds to another Samsung device.
Stop boundary
When this stops being a self-service repair
- !If nothing pairs after Reset network settings, book service
- !If one accessory fails on every phone, contact its maker
- !For a car stereo, check for a head-unit firmware update
Evidence ledger
Sources behind this answer
Exact questions
Common questions
Which Bluetooth version does the S23 have?+
Bluetooth 5.3, listed for the whole S23 family.
Why does my car stereo keep dropping my S23?+
Old head-unit firmware or a stale pairing; delete the phone from the car and the car from the phone, then pair again.
Does Airplane mode switch Bluetooth off?+
It does, and on the S23 you can switch Bluetooth back on without re-enabling cellular.
Will I lose my pairings after a network reset?+
Yes, all saved Bluetooth pairings go along with Wi-Fi networks.
Why does my S23 drop Bluetooth when the battery is low?+
Power saving can restrict background connections. Turn it off, or charge the phone, and test again.
How do I connect my S23 to a car?+
Put the car in pairing mode, pair from Settings, Connections, Bluetooth, and delete other phones from the car's list if it keeps choosing them.