Ok. About a month or two ago, my galaxy s3 started getting tgese weird notifications titled something like 'confirm samsung account' and saying something like 'you must confirm your samsung account to ensure it is safe. Enter your password below.' I dont remember exactly what it says even though ive seen it so many times but its something along those lines. I dont remember what I was doing when it first showed up but I remember the message didnt seem too out of place. The notification isnt a pop up, it takes me to a whole different screen. It seemed kind of strange, so I checked for misspellings and there werent any. It seemed official. So I decided id go along with it. I wasnt sure what the password for my samsung account was so I just entered my gmail account password (I dont know why). I hit go on my keyboard and the keyboard dissapeared but the only thing happened on the screen was the password id typed dissapeared from the text field. Nothing else happened. So I backed out and resumed my normal activities. After it kept happening (after the first time I never touched it again I just backed out of it) and happened in the middle of things I happened to be doing just carrying me off to the seperate screen I began to entertain the possibility it might be malware of sorts. But since nothing was happening besides this screen I decided id wait. I dont remember downloading any apps when it started happening. But now recently (the past week) my phone has begun doing strange things. It has been very laggy (especially the keyboard) and freezing (especially on the lock screen and messaging app). It takes repetitive clicking of the download button to download picture messages and half of them have to be resent. Sometimes when I hit download I recieve a multimedia text message from Anonymous that says Hidden sender address. Also sometimes when I hit download on a picture message or my phone automatically starts downloading I get a notification saying Message not download.. and a little bit of text at the bottom of my screen saying Download of No subject from (insert sender here) failed. Also sometimes when my phone lags while surfing the web (I use firefox) it registers a long press when I was actually scrolling. Also, going back to the samsung account message, I was looking through my downloaded apps the other day and saw an app called Samsung account with the samsung emblem. I have also found a way to trigger the message. When I try to access samsung account settings in under accounts in settings it appears everytime and prevents me from accessing them. All the little sync signs under my samsung account in settings have a red exclamation point and say theyre out of sync. I discovered these things a few days ago. I was thinking of doing a factory reset but I have some game apps I dont want to lose my progress on and it seems if anything a little drastic. Is there anythong else I could try? Im not sure I want to download any antivirus apps or scanners from the play store. Also when this is all sorted I plan to change the passwords on all the accounts Ive logged into on my phone. Any advice on what to do or what this actually is is greatly appreciated. Thanks! 
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