Can't join calls

Maybe the other people don't want to be your friend! 😂 Just kidding, I couldn't resist the joke! I have the 3s too and connect with 7 local friends and have noticed it, occasionally. I have 1gb fiber Internet but have noticed a couple of people not being able to connect sometime,  they have slower internet so maybe the bandwidth can cause it? Or if the internet providers have affected it. It might also be a bug so report it through the bug reporting tool on your headset anyway. Others might know more than I do so watch out for other replies. 

Ok I have sent a bug report but I don't think it had any thing to do with the Internet so I will just see what others have to say thanks for the reply tho