iPhone indicate [peer failed to respond to ATT value indication]


Using nRF52840 , Softdevice S340, gcc 

After my device is successfully paired with iphone (iOS15), after I upgrade my iphone to iOS16, the device cannot connect to iphone through Bluetooth. An error message [peer failed to respond to ATT value indication] is displayed. How can I solve this problem?


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  • A sniffer log of working with ios15 vs working/failing with ios16 would be helpful to at least narrow down the cause, but if I were to guess it may be related to some issues of handling of system attributes (e.g. retaining cccd values with handles) when iOS is updating, I think it's little that can be done in situations like this other than rebond. But an on-air sniffer log would as mention be helpful to narrow it down.