Hi, I'm using my stock email app synced with yahoo account since i got my Galaxy S3 last yaer. Everything was going good until I have a hated pop-up saying: "Sign-In FAILED. The password or username changed....blah..blah... I really hate this notification. I do not know what happen, I have this issue since 4-5 weeks ago. I already deleted for few days the Yahoo account from the stock email app and added again to see if the problem is fixed, but unfortunately NOT. I talked with Samsung Support and they said this is a problem with Yahoo and T-Mobile servers... I also tried by clear the Cache on the internet browser on my phone, but again i have the issue. Just I sign in to my yahoo account in any computer and when i sign out I got this TERRIBLE notification...
Please.........HELP....!!! When this issue will be fixed?? Many people are having this problem only with yahoo account. My wife has a hotmail account synced with stock app and everything is OK...