1. djolew's Avatar
    On the phone the Samsung Galaxy Core me from time to time appears black display and writes
    7s onkey press
    Please if you can explain to me what to do to prevent this from happening.
    Thanks in advance
    12-13-2014 01:06 PM
  2. B. Diddy's Avatar
    Welcome to Android Central! Does it seem to be associated with any particular app or action? Does it only appear briefly, or does it freeze that way? Are you rooted or unrooted? Have you tried a factory reset?
    12-14-2014 12:41 AM
  3. rebroad's Avatar
    You (or someone else) probably recently enabled some sort of debugging using the various *# codes on the dialpad. You can disable these in the same way as you enabled them. The key code is probably *#9900#
    09-23-2015 11:13 AM

Similar Threads

  1. Can't set Message center in HTC Desire 510
    By mohammad farahi in forum HTC Desire 510
    Replies: 3
    Last Post: 07-14-2015, 02:07 AM
  2. Replies: 1
    Last Post: 12-20-2014, 10:35 AM
  3. Just realized note 4 doesn't come with earbuds
    By Jon Jackson in forum Samsung Galaxy Note 4 Accessories
    Replies: 16
    Last Post: 12-15-2014, 04:53 PM
  4. Replies: 1
    Last Post: 12-14-2014, 12:59 AM