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We are facing an issue re-connecting to a iPhone 11 using encrypted messages.Our device platform is a TI CC2564B with Bluetooth 4.0 support.Our device has the master role initiating an encrypted BLE connection to an iOS App running on iPhone 11 with iOS 13.2.3 and 13.3 Public beta 4.Initial pairing process with an active connection works well.Trying to re-connect to the mobile device fails with a Connection Timeout due to not receiving LL_ENC_RSP.HCI logs on iOS shows an Connection Terminated Due to MIC Failure (0x3D).The transmitted key is valid, we double checked it with several other iPhones without any problem.Problem seems to be a BLE stack issue on iPhone 11 if used in peripheral role.Question is how can we address this issue to be solved?