I am using an iPhone 2020 SE, so it is not a particularly old or outdated phone. My IOS & my Rexton software are all up to date. I use Bluetooth to connect to a fitness band, wireless earphones, two different automobile sound systems, and a couple other devices.
The ONLY device I ever have trouble connecting between phone and device is my Rexton hearing aids’ software. Somehow, connections are lost in the middle of the day for no reason — any other Bluetooth connections are still active. Today I wanted to shut my aids off while hiking in high wind. I hoped to leave the aids in my ear rather than drop them into a pocket, but could not access the software — I was no longer paired. Couldn’t pair again in the field, so ended up rebooting my phone, “forgetting” the devices from the Bluetooth, deleting and re-installing the Rexton software, and re-pairing the aids to the phone. This happens every week - ten days. It may have started with the most recent release. Recommend someone fix your software or educate your programmers.
This is my last ever Rexton hearing aids. I may be retired, but I have better ways to spend my time or be frustrated.