It is now possible to read 40 days worth of data using the new iPhone app (ver 2.x.x).
Click on the circled "i" and then select "Full Data". The phone app will ask to establish a Bluetooth connection and then the full 40 days worth of data will download.
See this sequence below:
The app may ask you to establish a bluetooth connection. Place the top of the iPhone flat up against the electronic module for about 5 seconds until the reading starts.
This is useful for customers that do not, or cannot, connect to a WiFi router and continue to use the app to download data from the HM-6.
Note: the 40-day Data Read uses Bluetooth to download the data and is slower than the ultra-fast 10-day NFC Data Read.