I build a wearable based on esp32 witch connects to an iOS app. It would be great if my customers could see the current battery level in the default iOS widget. To do so, you have to implement the custom at-command „HFP Command AT+XAPL“. In Detail it is described here: 13.1 page 66: https://develope...

Hello, i am trying to build a device with esp32 and connect this via BLE to Android/iOS. I will build a custom iOS/Android App. I'd like to send some basic informtion about the device to all users who might be in range of the esp32. These user are allowed to read/write some information. They do not ...