Samsung Galaxy J4 Tips and Tricks

Android 8 (Oreo)
Phone: Samsung Galaxy J4
Factory OS: Android 8 (Oreo)

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Then view tips for the most recent OS version(s): Android 9 (Pie)
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If you have a frield, child, or family member who frequently borrows your phone, but you want to make sure that your personal settings and apps don’t get messed up, using Guest Mode on your Samsung Galaxy J4 is the best solution.

Now not all phone models have a Guest Mode feature, but if your Samsung Galaxy J4 model has this, just follow the steps below to activate it:

  1. On the home screen, swipe down using two fingers.
  2. Look for the User icon (usually located at the top-right portion of the screen).
  3. Tap “Add Guest.”
  4. Fill in the form and follow other instructions to set up the Guest Mode profile.
  5. You may also tweak the settings of each profile by tapping on the Guest or User profile. This includes access to contacts, making calls, sending messages, and even access to images and other files.
  6. Just tap on a Guest/User name to use that mode. If you want to exit Guest Mode, just tap on your main user profile or remove the guest account entirely.

This method generally works for Android phone users. However, certain brands may have different variations in setting up the Guest profile. For Huawei phone users, you can add up to 3 guest user accounts.

Just follow these steps:

  1. Go to Settings → Users & Accounts → Users
  2. Tap “Add User” then start setting up the User Profile.
  3. Alternatively, you can tap “Add Guest” instead. From there, you can also set up the Guest profile.

You can manually set up the settings and allowable activities per user or guest. Just tap on a guest/user profile and tick certain boxes of which they may be allowed to do. This includes making calls, sending messages, and sharing contact records.

Checking Available RAM and CPU utilization on your Samsung Galaxy J4 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.

Android now has a way to display your name, phone or email on your lock screen. Perfect if you have lost or misplaced your device.

To enable this go to Settings – Personal – Lock screen and security – Show information – Owner information.

Here you can enter any information you want, such as your name or email address.

If you want to install Apps outside of the Play Store (called sideloading), then go to Settings – Personal – Lock screen and security and select Unknown sources.

This setting will allow you to download Apps onto your device that would normally be blocked in the Play store.

Note: use at your own risk.

If you want to setup new email accounts, like Yahoo or Hotmail, go to your list of Apps.

Find the Email icon and press on it. A setup wizard will then be launched.

Enter you email address and password into the fields. You can also change the settings after this step.

Once you’re happy with the settings, give your account a Name and you’re done.

There are a couple of ways to add new home screens to your device.

The simplest is to go to one of your existing Homescreens and simply pinch the screen. This will show all of your Homescreens in thumbnail view. Then just press the Plus symbol to add another. You can also press and hold, then drag a Homescreen to a different position. Or press the little Home icon to make one of them your default Homescreen.

Another option is to download a Launcher App. These are third-party user interfaces that allow you to customize your phone in many ways. Most of them allow multiple homescreens. A very popular launcher which supports multiple homescreens is GoLauncher EX.

Simply go the Play Store and search for GoLauncher EX or another launcher.

To enable / disable your notification light, go to Settings – Device – Sounds and notifications – LED indicator.

From here you can choose various options.

This may not be available on all models. An alternative however is to download NoLED from the Play Store, which has many options for incoming notifications.

To enable or disable the vibrate function when you receive text messages go to the standard Messaging App and press More. Then Settings and then Notifications. Then select Vibrate.

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

This might not work on all models.

An almost essential setting is the ability to lock your screen by pressing the power key once. It will save plenty of time in the long run.

If this isn’t enabled, then go to Settings – Accessibility – Answering and ending calls.

Then select Pressing the power key.