25-09-2013 01:25 PM
Solved! See answer
25-09-2013 01:36 PM
There is no simple answer and it does tend to vary from person to person. It could be active in a matter of minutes or it could take the full 24 hours. Just because someone else had it take an hour or 24 hours has no bearing on how long it will take in your case.
You can help the process along by turning your phone off for a few minutes and then back on again.