If by software number you mean “firmware version,” use the Smart 3D app on your smartphone (the latest version on Google Play is v1.5). While connected to the Internet and connected to your HA’s via BT, launch the Smart 3D app. If your hearing care provider(HCP) has provisioned your Quattro’s for ReSound Assist (remote connection both to your hearing care provider for remote fine-tuning of your settings over the Internet and for downloading firmware updates from ReSound), you will see the My ReSound tab at the bottom of the main page of the 3D app. After you tap My ReSound, you will see on the page for that applet towards the bottom a line for ReSound Assist if you have it enabled through your HCP. One of the lines under ReSound Assist will be Hearing Aid Software Updates. If you open that, you can check if the firmware is available for you to download in your region of the world. You should be sure that your HA’s are reasonably charged before you do a firmware update (at least 50% charged, probably). The app will instruct you how to proceed and you cannot remove the HA’s from the proximity of your smartphone until it’s done. If you’re uncertain about how to proceed, you can probably go to your HCP and they should be able to do it for you. The firmware version that enables ASHA is 10043.4300. Right now the only known devices that support ASHA under Android 10 are the forthcoming Google Pixel 4/4 XL devices and the various Pixel 3/3A devices but as time goes by one can imagine other Android 10 phones will support it as well (see debates about how many OEM’s will earlier in this thread). To find out what version of the Smart 3D app you’re running you can go to Android Settings, Apps, Smart 3D, look at very end of that app’s listings. Or as someone else pointed out above, in the app itself, go to More tab at bottom, Legal Information, Manufacturer.
After you have updated to v1.5 of the app and .4300 of the firmware according to ReSound you should experience faster and more reliable BT connectivity as they say that they’ve zapped a number of previous problems that they had in both areas with the updates. You’ll also find your Quattro’s now listed under Android BT settings as paired devices named GN. I found improved connectivity but since I only have an Android Pie device (Galaxy Note 8), I haven’t been able to enjoy direct connectivity yet. Good Luck!