You are right!
That yielded this:
nRF Connect, 2025-05-15
TyOS (DC:23:50:25:01:A8)
I 11:46:34.091 [Server] Server started
V 11:46:34.094 Heart Rate (0x180D)
- Heart Rate Measurement [N] (0x2A37)
Client Characteristic Configuration (0x2902)
- Body Sensor Location [R] (0x2A38)
- Heart Rate Control Point [W] (0x2A39)
Unknown Service (0000aaa0-0000-1000-8000-aabbccddeeff)
- Unknown Characteristic [N R] (0000aaa1-0000-1000-8000-aabbccddeeff)
Client Characteristic Configuration (0x2902)
Unknown Descriptor (0000aab0-0000-1000-8000-aabbccddeeff)
Characteristic User Description (0x2901)
Characteristic Presentation Format (0x2904)
- Unknown Characteristic [I W WNR] (0000aaa2-0000-1000-8000-aabbccddeeff)
Client Characteristic Configuration (0x2902)
User Data (0x181C)
- First Name [R W] (0x2A8A)
- Last Name [R W] (0x2A90)
- Gender [R W] (0x2A8C)
V 11:46:34.275 Connecting to DC:23:50:25:01:A8...
D 11:46:34.275 gatt = device.connectGatt(autoConnect = false, TRANSPORT_LE, preferred PHY = LE 1M)
D 11:46:43.837 [Server callback] Connection state changed with status: 0 and new state: CONNECTED (2)
I 11:46:43.837 [Server] Device with address DC:23:50:25:01:A8 connected
I 11:46:43.843 [Server] MTU changed to 247
D 11:46:43.861 [Callback] Connection state changed with status: 0 and new state: CONNECTED (2)
I 11:46:43.861 Connected to DC:23:50:25:01:A8
V 11:46:43.875 Discovering services...
D 11:46:43.875 gatt.discoverServices()
D 11:46:44.185 [Broadcast] Action received: android.bluetooth.device.action.ACL_CONNECTED
I 11:46:44.331 Connection parameters updated (interval: 7.5ms, latency: 0, timeout: 5000ms)
D 11:46:44.719 [Callback] Services discovered with status: 0
I 11:46:44.719 Services discovered
V 11:46:44.724 Generic Access (0x1800)
- Device Name [R] (0x2A00)
- Appearance [R] (0x2A01)
- Peripheral Preferred Connection Parameters [R] (0x2A04)
Generic Attribute (0x1801)
- Service Changed [I] (0x2A05)
Client Characteristic Configuration (0x2902)
Unknown Service (0000fd50-0000-1000-8000-00805f9b34fb)
- Unknown Characteristic [W WNR] (00000001-0000-1001-8001-00805f9b07d0)
- Unknown Characteristic [N] (00000002-0000-1001-8001-00805f9b07d0)
Client Characteristic Configuration (0x2902)
D 11:46:44.724 gatt.setCharacteristicNotification(00002a05-0000-1000-8000-00805f9b34fb, true)
D 11:46:44.727 gatt.setCharacteristicNotification(00000002-0000-1001-8001-00805f9b07d0, true)
I 11:46:45.252 Connection parameters updated (interval: 48.75ms, latency: 0, timeout: 5000ms)