We have a device based on NRF52832, SDK 13.0, Softdevice S132 v4.0.5. We can't upgrade the Softdevice at this time but we can modify the firmware if necessary.
We know that Bluetooth 5.1 has a feature to allow for GATT caching to speed up the connection between the server and the client.
If the client, e.g., a smartphone, already has Bluetooth 5.1 and the server, e.g., our device, has Bluetooth 4.2, would it still be possible to have GATT caching?
What can the 4.2 device do to tell the 5.1 smartphone to do GATT caching?
