SKK A13 too many atemps pattern.. 101% DONE in Hard reset 
no box & computer needed, just follow the steps below
1. power off unit
2. press power button+volume down+menu key
3. phone logo & exlamation mark apear
4. press volume up
5. to select navigate volume up&down
6. select wipe all data then press power button
7. navigate volume down.. select delete all data user then press power button
8. to reboot press power button for the last time.
no box & computer needed, just follow the steps below1. power off unit
2. press power button+volume down+menu key
3. phone logo & exlamation mark apear
4. press volume up
5. to select navigate volume up&down
6. select wipe all data then press power button
7. navigate volume down.. select delete all data user then press power button
8. to reboot press power button for the last time.