bluetooth disconnecting iphone 16

If it happens in specific places, and the same places every time, it is almost certainly microwave interference→Resolve Wi-Fi and Bluetooth issues caused by wireless interference - Apple Support. The frequency range used by Bluetooth is in an unlicensed band, and is also included in S band (2 to 4 GHz) radar. Uses include airport surveillance radar, air traffic control radar, surface ship radar, weather radar and ground penetrating radar. So if you are near an airport, body of water when larger boats and ships or weather stations that is a likely cause. Bluetooth’s 2.4 GHz is right in the middle of S band.

FIRST: Do you have a 3rd party VPN installed, even if you are not using it? If so, delete the VPN profile in Settings/General/VPN & Device Management/VPN. Don't just turn it off; delete the profile. If that fixes it, you can try reinstalling VPN. VPN actually reduces your privacy, it does not enhance it, so you may want to rethink the reason you use VPN.

If that is not the issue, Bluetooth is a very complex communications method based on frequency hopping, or what is called “spread spectrum” protocols. The technique was invented and patented by the actress Hedy Lamar (who was also an engineer), originally for sending undecipherable messages in wartime. The two communicating ends change their frequency of transmission every few milliseconds. The communication works because the two ends have previously “agreed” on the frequency switch pattern, so the sender and receiver are always on the same frequency, even though it keeps changing. Except when they get out of sync or “collide” with another “user". So when you “forget” and restart Bluetooth, the two ends negotiate a new pattern that will usually work better.

A side advantage of spread spectrum is that there can be many communication streams using the same frequency band. As they are all changing frequency at what appears to be a random pattern, the probability of two of the using the same exact frequency at the exact same time is small, but as it isn’t zero, when this happens communication breaks down, and “rebooting” the protocol (unpairing, then re-pairing) is a good fix. The ability to use the same band for multiple conversations is why Bluetooth (and Wi-Fi) use it.

Glad to hear that, but I have no Bluetooth problems with my 16Pro