Searched the forum for anything similar, and haven't found it; sorry if I missed it.
I have Bionic that I have used since September. Have my mail app set to fetch my yahoo mail every 15 minutes. It doesn't get new messages even if I do a manual retrieve. This worked fine until Dec 23. I can send mail. I can get it to work for an hour or two if I power the phone off and power back on. I am on 893 and have been for 2 - 3 weeks (I believe.) I leave my phone in 3G in the house as I am on the fringe of 4g and it bounces plus I use wi-fi in the house.
Any ideas as to what is going on? Any advice (other than don't use Yahoo as that is not an option at this time) is appreciated.