Achieved max throughput of NRF5340 with iPhone is 520kbps.

[Rana Roy]

***Description***

I am trying to build a sample application which comprises of a notification from peripheral to central. I configured the PHY to 2M. With the mentioned configurations, the achieved maximum throughput for nrf5340 using iPhone or iPad is approximately 550kbps, which is quite low. I want to achieve a maximum throughput of 1.2 to 1.3Mbps. Can anyone please look into the configurations and suggest the ways to achieve the maximum value?

***Configurations and Tools***

SoC: NRF5340
Device: iPhone13
Zephyr: v3.5.99
NCS: v2.6.1


4520.throughput_test.zip

[khelmutlord]

Can you confirm what your MTU is set to? I believe that the iOS max is 247 bytes.
https://github.com/nrfconnect/sdk-zephyr/tree/main/samples/bluetooth/mtu_update/peripheral

Thanks,

Helmut Lord