10 Galaxy Tab 4 NOOK Tips and Tricks - dummies

10 Galaxy Tab 4 NOOK Tips and Tricks

By Corey Sandler

You may run into some bumps along the way with your Samsung Galaxy Tab 4 NOOK. The following list of tips and tricks should smooth your way.

Your Tab 4 NOOK won’t turn on

Is the battery completely empty? Use the AC adapter and give your Tab 4 NOOK at least an hour. If the device still fails to turn on after a recharge, it’s time to call in the troops: Call the NOOK center at 800-843-2665, use the online chat, or visit a Barnes & Noble store. Go there first.

However, Samsung may be able to help. Visit their website or call 800-726-7864 if you think you’re dealing with a hardware problem not of your own making.

You can’t use the USB cable and a computer port to charge and use the tablet at the same time; the tablet must be off.

Your Tab 4 NOOK won’t turn off

Try the following:

  1. Unplug the USB cable from the AC adapter (if it’s attached to your tablet).

  2. Remove any device connected to the headphone jack.

  3. Press and hold the Power/Lock key for 15 to 20 seconds.

  4. If the tablet turns off: Wait a few seconds, turn it on, and check its operation. Then try turning it off in the usual manner.

    If the tablet doesn’t turn off: It’s time to try a reset.

    If the reset doesn’t fix the problem, do nothing else. Do not pass Go. Call NOOK customer care for assistance.

Your tablet is a power vampire

What can you do? Turn down its screen brightness. Get in the habit of pressing the Power/Lock key anytime you walk away from the tablet for a few minutes. Turn on the power saving mode.

Extend your warranty

Many credit cards offer added protection for devices that you’ve bought with those pieces of magic plastic. For example, American Express Extended Warranty automatically doubles the warranty protection for most devices — including tablets — for as much as one year. Contact customer service for any credit cards you own to see if this is included.

Find the hidden Task Manager

You may wonder exactly which programs are currently running on your Tab 4 NOOK. To see Task Manager, tap the Recent key (left of the Home key).


You’ll see these categories: Active Applications, Downloaded, RAM Manager — if you get the feeling that your tablet is slogging through molasses instead of skating across clear ice, check here — and Storage.

The Clear Cache option can sometimes clean up things after a crash or slowdown.

Visit Android System Recovery

Deeply hidden — and not mentioned in the NOOK manual or the Samsung manual or in the daily SPAM mail you receive offering you millions of dollars in unclaimed lottery winnings — is a secret control panel for Android.

Now, if you want, go ahead and look at this screen. But please read all of the instructions fully and don’t make any sudden movements because you could end up making things much worse. Ready? Really? Okay:

  1. Turn off your tablet and let it catch its breath for a second or two.

  2. Hold the tablet in your left hand in portrait mode (taller than wide) with the Samsung label at the top.

  3. Rest your left pointer finger on the Power/Lock key.

  4. Rest your right thumb on the Home key.

  5. Rest your right pointer finger on the Volume + (up) key.

  6. Now press and hold all three keys at the same time.

  7. When the Samsung logo appears, let go of all three keys.

    A few seconds later you will find yourself in the deep, dark recesses of the Android system recovery screen. The highlighted line on the screen will read Reboot System Now.

  8. Read this carefully: Use the Volume key to move the highlight bar. Go down four steps, to Wipe Cache Partition.

    Don’t go anywhere else. (Especially stay away from Wipe Data/Factory Reset.)

  9. With Wipe Cache Partition highlighted, press the Power/Lock key.

    The little Android guy on the screen will hop, and a message reports that the cache has been wiped, which means cleared away.

  10. Make sure that Reboot System Now is highlighted. Check again, please.

  11. Press the Power/Lock key to restart your tablet.

    Welcome to the super-secret Android geek club.

Troubleshoot apps

Most apps work as advertised. Some don’t. One way to see if one of your added apps is causing problems is to reboot your tablet into the somewhat secret Safe Mode.

Try to work backward from the most recent app you installed or updated. What’s changed since the last time the tablet was working properly?

Uninstall (take off) apps or updates using the Application manager. Here’s how:

  1. Pull down from the top to display the notification panel.

  2. Tap the Settings (gear) icon and choose the General tab.

  3. Tap the Application manager from the panel on the left side.

  4. Swipe left or right near the top to display the Downloaded tab.

  5. Tap the app you want to uninstall.

  6. Tap Uninstall.

    It may take a while, but uninstall one app at a time and restart the tablet each time. You can’t uninstall apps that came preloaded on your tablet.

Do a soft reset

A soft reset tells the device to forget any recent commands or data. It doesn’t erase any of your books, documents, or configuration settings. To soft reset, do this:

  1. Press and hold the Power/Lock key for 20 seconds, then release the key.

  2. Press the Power/Lock key again for 3 seconds to turn on your tablet.

Go to super-secret developer mode

Developer Options has settings usually reserved for people who are writing apps or developing software.

If you turn on Developer Options, there’s no easy going back. The Developer Options panel is always on the General tab. As long as you keep Developer Options in the Off position, no changes will be made to your operating system. The only way to remove the Developer Options panel is to perform a factory reset. Proceed at your own risk.

Here’s how to load the mode:

  1. Pull down the notification panel from the top of the screen.

  2. Tap the Settings (gear) icon and choose the General tab.

  3. In the left panel, scroll up to and tap About Device.

  4. In the right panel, find Build Number.

    It should be grayed out.

  5. Tap Build Number not once, not twice, but seven times.

  6. Move the slide switch at the top of the screen to the left or gray position.

    Any changes you might have made are disabled.

Perform a factory reset

A factory reset deletes all your settings, including your NOOK account, Google account, Samsung account, and any others you have registered. It also permanently removes all files, including books, movies, music, text, and photos.

You might consider performing the dire act known as a factory reset for two reasons:

  • All other attempts at fixing an operating system or app problem have failed and you’re willing to start over. Completely.

  • You want to sell or give your Samsung Galaxy Tab 4 NOOK to someone and you want to remove all traces of passwords, account names, photos, and anything else you’ve added to the device.

Here are the steps:

  1. Pull down the notification panel from the top of the screen.

  2. Tap the Settings (gear) icon and choose the General tab.

  3. In the left panel, tap Backup and Restore.

  4. In the right panel, tap Factory Data Reset.

  5. Tap Reset Device.