BLE_app_uart

Dear nordic,

I need more information regarding this?

1. I heard the BLE one packet has possible 20 bytes. but i tested this example and connect using nRF connect app i can send more than 20 bytes how this possible it's confusing me?

2. I heard this service is proprietary of Bluetooth classic. can you describe which service and its ID every thing?

3. Is it possible only send characters only through this or can we send hex format from smart phone to nrf52832