This method tested by me if you have Samsung Galaxy Attain 4G device in that issues of like hang on logo, restarting problem, pattern lock, screen lock then you can use this guide and this without any box you can do just before use remember of must be charged your device battery cause if low device turns off during the process not starting so carefully use.
  • Samsung Galaxy Attain 4G USB Driver or Flash Tool
Before use save your data which is in device cause some impotent like contacts, messages, emails, photos, videos, calendar, notes etc if in SD Card so no need to backup but I suggest first remove SIM Card, or SD Card in device after following this guide or need hardware related that to be working well  which is device volume up, down or power keys for that solve need keys. Must be charged a battery up to 75% now let's go how to solve above issues using this guide ?

Procedure

  • Press and hold Volume Up + Home + Power until Android Recovery logo then leave all keys
  • Select "Wipe Data / Factory Reset" from Volume Down button Press Home key and Press Volume Up to confirm Volume Down to Exit
  • You will see Wipe data processing like below
    • -- Wiping data...
    • Formatting /data...
    • Formatting /cache...
    • Data wipe complete.
  • Last select "Reboot System Now" wait for device start normal a few minute
  • Congratulation you are done
Note : If not solve Hang on Logo, Restarting follow related post