Samsung Galaxy S Plus formatted itself The past couple of days my Galaxy S Plus started lagging, and today all of sudden it got stuck. When I restarted it the phone was completely wiped, had no apps, no contacts, nothing.  Now when I try installing any app it just says "Downloading" but nothing happens - nothing gets installed. I have no idea what is happening. Could some one tell me what I should do?

It was on stock firmware when is locked up. I tried a soft reset; after clicking "Erase everything" nothing happens, it just shows the factory reset title on top and blank screen below.




I also tried a hard reset without success. I took out the battery then held home volume up and power together while powering it on, but it just shows on screen "Ram Dump mode" and some other stuff. No menu shows up.
It sounds like your phone's internal memory may be physically damaged or suffering from severe corruption (such as many bad blocks).  If that's the case, it may be mounting the system as read only which would prevent you from downloading and installing apps.  If it is still under warranty, you should probably exchange it for a new one.