How to Change SIM Pin on Galaxy S4
Setting up a lock by SIM card PIN is an old yet efficient way to make your device secure. If you've already known the default SIM Pin on your Galaxy ...
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The screen off memo feature on Galaxy Note 5 lets you take notes even if the screen is off. But do the older Note versions support this feature? Officially No (yet), but unofficially you need to do as follows to enable screen off memo on Note 4 (as well as Note 3 and Note Edge):
1. Download and install the Screen Off Memo app from the XDA forums (Click here)
2. Install the app and enjoy taking notes on your Note 4 while the screen is off
** Important note: since this application is not available in the Play Store, download it on your own risk