# Problem with BLE on Argon
**URL:** https://community.particle.io/t/problem-with-ble-on-argon/55432
**Category:** Firmware
**Tags:** argon
**Created:** [March 31, 2020, 1:27pm UTC](https://community.particle.io/t/problem-with-ble-on-argon/55432 "2020-03-31T13:27:24Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Banana](https://community.particle.io/u/Banana)
#### Post date: [March 31, 2020, 1:27pm UTC](https://community.particle.io/t/problem-with-ble-on-argon/55432/1 "2020-03-31T13:27:24Z")
Problem with BLE on Argon
Hello, everyone!
When sending data using BLE, the data does not arrive completely - part of the data is lost.
By UART, a string is received into the buffer, the buffer size is 700-800 characters. After that, the UART buffer is sent using BLE.
I accept data from BLE using the Adafruit Bluefruit app on my smartphone - I receive average up to 100 characters - the rest of the characters is being lost.
I use an example from Particle Argon (BLE Log Handler) adapted to oneself. Link: [https://docs.particle.io/tutorials/device-os/bluetooth-le/](https://docs.particle.io/tutorials/device-os/bluetooth-le/)
I’m transmitting the string via BLE using function Log.printf().
Maybe someone has an example of how to receive a large stream of data via UART and send using BLE?
Could you please explain, what am I doing wrong?
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### Author:  [@system](https://community.particle.io/u/system)
#### Post date: [September 30, 2020, 1:27am UTC](https://community.particle.io/t/problem-with-ble-on-argon/55432/2 "2020-09-30T01:27:27Z")
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