good afternoon to all, a week ago I bought the Motorola XT914 Rzar D1 with 4.1.2 android jelly bean factory to the days of having purchased the Home button , edit, and back at times stop working or scratched by a kind of alt tab like crazy and then those 3 buttons below the screen but lock off button and operate normally , and has q q pair hang back to normal or Reboot again be normal when you disconnect from the PC or sometimes sometime crashes out of nowhere , and returns to normal by rebooting or turning off and on the screen , try to restore the normal agail was apparently all but then to add my google account my Broken Applications toas s were reinstalled and note q to turn already lost agility q had to charge so q could not determine whether it is software or hardware and is q preocupay me and been removing applications but the problem persists about 2 or 3 times a day , this is a list d applications q install :
angry birds star wars
aviary photo editor
It is expllorer file
It is task manager
facebook
facebook mesenger
firefox
google translator
google earth
easy voice recorder
instagram
Flashlight - tiny flashlight
my calendar free
notepad
xbmx remote - to control xbmc media center
paragon NTFS & HFS +
perfect viewer - for comics
QR codes QR droid to ler
Shellwazer - game
Sherpa beta - virtual assistant
Skype
Subway Surfers - game
VLC for android beta
WhatsApp
XiiaLive - Internet Radio
q me know I can do more before finally bring it to technical service, passage would then give root but first I want to solve this issue , thanks for the attention.
PD : android 4.1.2 Use native manufactures Jelly Bean and not even rooteado