Scrambled Calls on iphone
I am having terrible problems recently with calls from my iphone getting scrambled and then sounding like I am underwater! I had an iphone 6 and thought it was that, so got a brand new iphone XS at Christmas, but the problem remains - even worse than ever, which is really annoying. My network provider is Sky who have sent me a new SIM card and also say that it isn't a network problem. The new SIM is worse if anything. I really don't want to do a factory reset unless I absolutely have to.
Has anyone else experienced this and if so, how did you fix it please?