iPhone shows “Accessory may not be supported”
Accessory may not be supportedReconnect the accessory and check compatibility, cable and connector. Damage, debris or incompatibility can trigger the alert; it does not identify one cause.
Try this first
1 quick checks · ~3 min
Step-by-step solutions
Reconnect and check compatibility
Do not force the connector or keep using damaged accessories.
Disconnect and reconnect the accessory. Check that its manufacturer lists compatibility with your iPhone model and that you are connecting it as intended.
If the alert returns, disconnect it and inspect the cable, connector and port. Stop using visibly damaged accessories; do not try to straighten contacts.
Remove surface dirt and try another accessory
Keep cleaning to accessible surfaces and follow Apple’s cleaning guidance.
With the accessory disconnected, gently wipe surface dirt from its connector with a soft, dry, lint-free cloth. Do not put metal or sharp objects or liquids into the port. Get safe cleaning for lodged debris.
Try another known working compatible accessory. If only the first fails, check with its manufacturer before attributing the problem to the iPhone.
Check whether iOS needs an update
Some accessories require a compatible iOS version.
Check the accessory’s software requirements and whether an iOS update is available. Prepare a backup and follow the installation with stable power and connectivity.
Reconnect the compatible accessory when installation finishes. Do not erase the iPhone to try to remove the alert.
Still not working?
If the alert appears with no accessory connected or persists with checked compatible accessories, contact Apple. Inspection can distinguish an accessory problem from the port without assuming a specific fault.
Sources
Documentation behind this guide. Editorial recommendations are identified separately.
Source review: . A documentation review, not a physical hardware test.