A:AnswerNo I just tried and when I connected them to a second device they could no longer connect to my phone. Don't know if this can be fixed with an update later. This is literally the only complaint I have with these earbuds.
A:AnswerNo. The Senheiser True Wireless have aptX low latency.
The earphones use Bluetooth 5.0 and support AptX and SBC Bluetooth codecs. There's no support for AAC, so iOS devices will default to SBC.
A:AnswerI use these at the gym all the time. You just have to make sure you have a secure fit. I use the small size for daily use, but put the large on when I go to the gym and they have never fell out.
A:AnswerWe offer replacement buds for sale and offer an upgrade program for users who are not within the warranty period upon provide proof of purchase. - JH @ MD