I'm developing an App that works with BLE connection based devices. The BLE connection process, which connects well to the iPhone 16 without any problems, has not worked at all since the iPhone 17. Even when using the same iOS26 version, iPhone 17 is the only one having problems. Progress is stuck after frame 124 in the entire snoop below. Please check if it is a known problem or if there is a solution. 123 2025-11-04 02:01:39.262000 0.000000 localhost () 7c:c6:b6:91:10:04 () ATT 12 Sent Exchange MTU Response, Server Rx MTU: 232 124 2025-11-04 02:01:39.265000 0.003000 localhost () 7c:c6:b6:91:10:04 () ATT 16 Sent Read By Group Type Request, GATT Primary Service Declaration, Handles: 0x0001..0xffff

Hi, I am developing a device that BLE Advertise, and I scan the packet using CoreBluetooth in my app. When my device advertise two or more packets with ScanResponse at almost time, the results scanned in CoreBluetooth are not accurate. In other words, it delivers the result consisting of different Advertise packets and ScanResponse packets. Packets delivered from CoreBluetooth ADV + ScanResponse Expected packet: 88571D0B84D906020430 + 373957 Actual packets: 88571D0B84D906020430 + 304633 The packets delivered in the CoreBluetooth is a mixture of 1st ADV data and 2nd ScanResp. values. [1st ADV data] + [ScanResponse of 2nd ADV data] Is this a CoreBluetooth bug? Or is it an issue of the device's advertise policy? Attach the btsnoop log on my iPhone below. ### [1st ADV data] Dec 02 14:00:14.395 HCI Event 0x0000 98:D7:42:00:15:0C LE - Ext ADV - 1 Report - Normal - Public - 98:D7:42:00:15:0C -68 dBm - Manufacturer Specific Data - Channel 38 Parameter Length: 57 (0x39) Num Reports: 0X01 Report 0 Event Type: Connectable Advertising - Scannable Advertising - Legacy Advertising PDUs Used - Complete - Address Type: Public Peer Address: 98:D7:42:00:15:0C Primary PHY: 1M Secondary PHY: No Packets Advertising SID: Unavailable Tx Power: Unavailable RSSI: -68 dBm Periodic Advertising Interval: 0.000000ms (0x0) Direct Address Type: Public Direct Address: 00:00:00:00:00:00 Data Length: 31 Flags: 0x4 BR/EDR Not Supported Data: 02 01 04 1B FF 75 00 42 0C 83 05 59 30 41 4A 54 32 31 30 01 04 88 57 1D 0B 84 D9 06 02 04 30 Dec 02 14:00:14.395 HCI Event 0x0000 00000000: 3E39 0D01 1326 000C 1500 42D7 9801 00FF >9...&....B..... 00000000: 3E39 0D01 1326 000C 1500 42D7 9801 00FF >9...&....B..... 00000010: 7FBC 0000 0000 0000 0000 001F 0201 041B ................ 00000020: FF75 0042 0C83 0559 3041 4A54 3231 3001 .u.B...Y0AJT210. 00000030: 0488 571D 0B84 D906 0204 30 ..W.......0 ### [2nd ADV data] Dec 02 14:00:14.407 HCI Event 0x0000 98:D7:42:00:15:0C LE - Ext ADV - 1 Report - Normal - Public - 98:D7:42:00:15:0C -60 dBm - Manufacturer Specific Data - Channel 39 Parameter Length: 57 (0x39) Num Reports: 0X01 Report 0 Event Type: Connectable Advertising - Scannable Advertising - Legacy Advertising PDUs Used - Complete - Address Type: Public Peer Address: 98:D7:42:00:15:0C Primary PHY: 1M Secondary PHY: No Packets Advertising SID: Unavailable Tx Power: Unavailable RSSI: -60 dBm Periodic Advertising Interval: 0.000000ms (0x0) Direct Address Type: Public Direct Address: 00:00:00:00:00:00 Data Length: 31 Flags: 0x4 BR/EDR Not Supported Data: 02 01 04 1B FF 75 00 42 0C 83 23 59 30 41 46 44 36 31 31 04 01 98 D7 42 00 15 0C 06 02 04 30 Dec 02 14:00:14.407 HCI Event 0x0000 00000000: 3E39 0D01 1327 000C 1500 42D7 9801 00FF >9...'....B..... 00000000: 3E39 0D01 1327 000C 1500 42D7 9801 00FF >9...'....B..... 00000010: 7FC4 0000 0000 0000 0000 001F 0201 041B ................ 00000020: FF75 0042 0C83 2359 3041 4644 3631 3104 .u.B..#Y0AFD611. 00000030: 0198 D742 0015 0C06 0204 30 ...B......0 ### [ScanResponse of 2nd ADV data] Dec 02 14:00:14.407 HCI Event 0x0000 98:D7:42:00:15:0C LE - Ext ADV - 1 Report - Normal - Public - 98:D7:42:00:15:0C -60 dBm - ST Station123 - Manufacturer Specific Data - Channel 39 Parameter Length: 48 (0x30) Num Reports: 0X01 Report 0 Event Type: Connectable Advertising - Scannable Advertising - Scan Response - Legacy Advertising PDUs Used - Complete - Address Type: Public Peer Address: 98:D7:42:00:15:0C Primary PHY: 1M Secondary PHY: No Packets Advertising SID: Unavailable Tx Power: Unavailable RSSI: -60 dBm Periodic Advertising Interval: 0.000000ms (0x0) Direct Address Type: Public Direct Address: 00:00:00:00:00:00 Data Length: 22 Local Name: ST Station123 Data: 0E 09 53 54 20 53 74 61 74 69 6F 6E 31 32 33 06 FF 75 00 30 46 33 Dec 02 14:00:14.407 HCI Event 0x0000 00000000: 3E30 0D01 1B27 000C 1500 42D7 9801 00FF >0...'....B..... 00000000: 3E30 0D01 1B27 000C 1500 42D7 9801 00FF >0...'....B..... 00000010: 7FC4 0000 0000 0000 0000 0016 0E09 5354 ..............ST 00000020: 2053 7461 7469 6F6E 3132 3306 FF75 0030 Station123..u.0 00000030: 4633 F3