No sound After update

After an android update it happens that sound stops working, in this case, you do the following:

1. Make sure you backup Life Reminders either
   • Recommended using the internal sync feature(follow link for instructions). Note that when you activate this feature it can take a few minutes for all your reminders to be backup to the server, the other method is instant.
   • Local or Dropbox(instructions)
2. Reinstall Life Reminders
3. Restore your data (using method described in step 1)