Q: My iPhone 5 frontal camera don't working since update iOS 9.2

Hi Dilcia,
 

Thanks for visiting Apple Support Communities.
 

Start with this step if the front camera on your iPhone 5 doesn't work:
 

If your device has a front and rear camera, try both cameras by tapping  . If you see the closed lens or black screen on only one camera, take your device to an Apple Retail Store or Authorized Service Provider for more help.

If both cameras on your iPhone don't work, try the additional steps in Get help with the camera on your iPhone, iPad, or iPod touch. 

Sincerely.