Originally Posted by rorytmeadows
Odd issue, but I keep getting constant Couldn't sign in errors for my Yahoo! email accounts only when connected to mobile data, never on Wifi. Anyone ever seen this?
I am having the exact same issue, it started happening to me about maybe a month or so ago. I did change my APN settings to a different one (internet2.voicestream.com) but did not add an alternate as described in the response. Did you try this and if so, did it work for you?
My solution was to install the Yahoo email app but if I don't need it, I'd like to get rid of it.