We have seen an issue with Android devices running versions 12.1 (on Google Pixel) or 12L (on other manufacturers), where a normal working HI will drain much faster when paired to these devices compared to normal battery life when paired with Android devices running other versions.

Please note that this is not an issue with the hearing instrument and is due to changes made in Android 12L/12.1, which was subsequently fixed with Android 13.

Android 12L and 12.1 are typically used by large screen phones, of which the following affected models are popular with users:
 
Android 12.1 
•    Google Pixel 3a & 3a XL
Android 12L (seen as One UI version 4.1.1; Android version 12)
•    Samsung Galaxy Tab S6, S7, S8 and their variants like 5G/Lite/+
•    Samsung Galaxy Z Flip 1, 3, 4 and their variants like 5G
•    Samsung Galaxy Z Fold 2, 3, 4 and their variants like 5G
 
Please note that this is not an exhaustive list of all affected models, but only the popular ones seen in the market.
 
When hearing instruments are paired with Android devices running 12L/12.1, they will remain constantly connected to the mobile device whenever Bluetooth is switched on, even when not streaming, thereby draining the HI battery 30% faster than normal.
 
This is not an issue with the hearing instrument and is due to changes made in Android 12L/12.1, which was subsequently fixed with Android 13. Samsung and other manufacturers' users are recommended to upgrade to Android 13 as soon as it is released for their devices.
 
For users currently with Android 12L/12.1 on their devices, including Pixel 3a & 3a XL where Google has discontinued further updates, please turn off Bluetooth on the phone when not streaming or using for phone calls. 
 
Users can find the current version of Android on their device using the following steps (for example):  
How to check & find what Android version I have on my phone | Samsung UK
or Check & update your Android version - Android Help (google.com)