iGS20E has no Bluetooth function and is not supported to upload data to APP.
For data analysis, you may pls try the following steps to upload data to the website.
Steps to upload data to the website：
1. Power off the iGS20E.
2. Connect your iGS20E to your computer via USB cable.
3. Short press the left button and the device will be recognized as a new disk.
Log in to the webpage and select fit files to upload activities. http://i.igpsport.com/upload/index