If it takes 15 mins then its problem. That much data should be transferred under 30 sec or so assuming that MTU is setup correctly. Ive got similar problem once, but it was ble mesh project, so ble has been used extensively and ive been doing OTA over ble at the same time. Do you have any example p...

I am using Bluedroid Stack (BLE) and Communicating with Mobile App(Newly developed), transferring the 500 KB data takes a lot of time(15 mints) - GATT profile. MTU size configured: 512 Connection parameters: latency: 0 max_int: 0x20 min_int: 0x10 timeout: 400 please suggest how to improve the transf...

What is the minimum requirement of RAM and Flash to use Bluedroid Stack using it in Dual Mode?

Does anybody have a reference throughput/speed using a nimble BLE stack between two ESP32 boards? Not getting any reference for esp32 nimble stack throughput.

Any reference link to start with bluedroid to use both BLE and SPP (for large packets) in dual mode.

Our custom board based on ESP32-WROVER-E, it has Bluetooth v4.2

and it requires to transfer of large files more than 3 MB of sensor data files. Hoping BLE would be good and not time taking.
Still doing reaching to go with Bluetooth classic or BLE, Seeing dependencies from App(android/iOS) side.

I am also looking for similar suggestion to start of my project, Thanks in advance