@vshymanskyy, could you please include that ble is currently not compatible with iphone, also in the built in ble example in arduino ide?
i think most people read the comments in the example code, not in the app, when experimenting with new code.
from the current description, i would not think that ble it is not supported on iphone:
/**************************************************************
* Blynk is a platform with iOS and Android apps to control
* Arduino, Raspberry Pi and the likes over the Internet.
…
* This example shows how to use Serial BLE modules (HM-10, HC-08)
* to connect your project to Blynk.
thank you!