Samsung Galaxy J7 Duo Tips and Tricks

Android 8 (Oreo)
Phone: Samsung Galaxy J7 Duo
Factory OS: Android 8 (Oreo)

Have you updated your Operating System?
Then view tips for the most recent OS version(s): Android 9 (Pie)
Or view tips for all Android versions

To access the scientific calculator, simply open the calculator App and rotate the phone to landscape mode.

The calculator will automatically change to a scientific one.

If you tend to run out of battery power quickly, then you can turn on Power saving mode.

Pull down the notification screen by swiping your finger from the top of the phone. Then select Power Saving. You may need to scroll along the available icons.

You can also select to turn on Battery saver automatically, once battery reaches at certain level. To enable this, go to Settings – Battery – Battery saver, and then turn Automatic Battery Saver on.

From the Contact list or the Messaging list, swipe from Left to Right to call a Contact.

This might not work on all models.

Checking Available RAM and CPU utilization on your Samsung Galaxy J7 Duo is very helpful if you are thinking about removing more Apps.

Looking at which Apps drain your RAM, CPU time, and battery will help you decide which of them should be removed from your phone.

To do this, just follow the simple steps below:

  1. Go to your phone settings. You can do this by swiping down the home screen to reveal the notification bar. From there, tap on the gear icon to open Settings.
  2. Look for Device Maintenance → Memory
  3. Alternately, you can also tap on “Data Usage,” then scroll down to see which apps are taking up CPU power.
  4. You may also look for “Smart Manager.” You will see the status of your RAM and Storage in this area. If you tap RAM, you will see a list of apps that are taking up much of your RAM.
  5. For Huawei users, you can look for “Storage” under Settings.

All methods from 2 to 4 can be accessed on the Phone Settings alone. There are certain variations, depending on your phone or unit.

This section should also show what is taking up valuable CPU time. Useful if you think some Apps are draining your battery.

To delete or remove homescreen widgets, simply press and hold. Then drag the widget to the top-right corner of the screen and into the Trash icon.

Android now comes with a sound Equaliser so you can adjust your bass and treble.

Simply open a music file using the Music Player App. Then go to Settings – SoundAlive and select Custom.

Then simply drag the sliders up and down to adjust the bass and treble.

To speed up your phone, you can turn off screen animations. Go to Settings – Developer options.

Then scroll down to Window animation scale and select that. From here you can choose to turn Animations Off. This will make screen transitions faster.

Note: Developer Options is not enabled by default. To enable, go to Settings – About Device. Then tap on Build number 7 times.

To lock your screen while you are watching videos, simply press the power button.

This will disable the touchscreen buttons while the video is playing, but it won’t turn the screen off like the lock key normally does.

Note, this will only work on video files that you are playing that are stored on your phone. It won’t work for videos played within websites, such as YouTube videos.

If you want to resize your homescreen widgets, then press and hold on a widget for 2 seconds. If the widget is resizable, then an outline will appear around the widget. Simply drag the sides to resize the widget.

If the outline doesn’t appear or you can’t drag the lines, then the widget is a fixed sized widget.

There is a hidden Android Easter egg on the phone that Google has built into your device.

Go to Settings. Then scroll down to About device. Then tap on the Android version option 5 times.

Once you see something on the screen, you can then rub the screen with your finger to produce another surprise. If rubbing doesn’t work then try tapping with your finger. A combination of the above should work.

By the way don’t expect to see an actual Easter Egg. That is just the name given to things hidden inside software or operating systems.