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

If you are browsing a website and want to see the HTML source code behind the page, then Android doesn’t offer you the ability to do this by default.

There is however a handy App called View Web Source which can be installed. Whenever you want to view the HTML of a web page, you just press the Menu – Share – View Web Source.

You can then browse the code or copy the content into the clipboard.

Depending on how your phone is set up, sometimes you will see lag when swiping between homescreens. There are a number of things you can try to fix this, as follows:

First, try restarting your phone. This will fix many problems.

If that doesn’t work, then remove any Widgets that pull data to the phone, such as Twitter, Weather widgets etc.

If you have Live wallpapers turned on, then try turning them off by going to Settings – Wallpaper, then changing to a different Wallpaper.

Go to Settings – System – Developer options – Window Animation Scale and Transition Animation Scale. Try changing these to 0.5x (or even 0).
(you will need to unlock Developer options if you can’t find this. Use the search form on this site).

Sometimes the problem can be with the phone or operators skin or launcher, so try going to the Play Store and downloading a third party launcher such as Nova launcher or Go LauncherEx. Note: you will need to re-create your homescreen shortcuts, but they are both great launchers.

Another tip is to always press the Back key instead of the Home key when leaving Apps. The Back key will often close the App properly, while the Home key can leave it running in the background.

If you want to access your quick settings more quickly, then instead of swiping down with one finger, then use two.

This should take you straight to the quick settings, however it may not work on all phones and models.

Here’s how to pair your device with another Bluetooth device.

First you will need to turn Bluetooth on. To do this, drag your finger from the top of the screen down, to show your notifications menu. Then press Bluetooth so the icon is green.

Then press the Scan button and your device will start to scan for pairable devices.

Choose the desired device and press Accept. You may be asked to enter a PIN or Password.

If you are not happy with your notification light, then you can change and tweak it. Go to the Play Store and download an App called Light Flow.

You might need to enable the notification light before the App works. Go to Settings – Device – Sounds and notifications – LED Indicator.

Alternatively, for some devices, you can turn?your Notification Light ‘ON or OFF’ and you can also change the color of Notification Light. For that go to Settings – Display and then toggle pulse notification icon. You can change the color of LED light from same menu.

Looking for a charger for your Samsung Galaxy J7 Duo? Our guide shows you the best deals and provides advice on charger types.

Important: We take no responsibility for chargers purchased that are incompatible with your device. Please check your user manual or product descriptions before you buy.

The good news is that unless you own an iPhone (which uses the Apple Lightning Charger), almost all smartphones on the market today use the standard 5 watt Micro USB connection. This is great for consumers because it means you can normally borrow a charger from someone else if your phone is out of juice (unless they own an iPhone of course). Many shopping centres and events also provide charging stations for this connection.

Charger types
Chargers can be classified into the following four categories:

USB Charger– This is normally a simple cable that connects from your phone (micro USB port) to your laptops or desktop PCs (normal USB port). They’re super cheap and super convenient. They are often included in your phone box, but we recommend you buy extras so you can leave one at home, one at work, one at friends place etc.

Mains Charger– These also normally come in your phone’s box, but it’s also useful to have them dotted around the house or workplace so you’re never far away from a re-charge.

Car Charger– If you have a car, you should get a car charger. These simply plug into your cigarette lighter and the other end plugs into your phone. We recommend buying one for each car that you own.

Portable Charger – Also known as an external battery pack, these are great for camping, festivals or going anywhere where you may not have a mains power supply. They come in many sizes ranging from tiny portable ones providing one charge, to large power packs allowing you to charge your device multiple times.

Get the best chargers!
To help you choose, we’ve listed the best-selling chargers for the Samsung Galaxy J7 Duo. Simply click on the products below to find out more (if you don’t see any products below, make sure you pause any ad blocking software):





If you would like to unmount your SD card for whatever reason, then drag down your notifications menu from the top of the screen and press the Settings icon.

Then find Storage – SD card – Unmount SD card.

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 J7 Duo is the best solution.

Now not all phone models have a Guest Mode feature, but if your Samsung Galaxy J7 Duo 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.

To store a phone number that you have received in an email, hold down on the number and you will be given the option to call, send an SMS or add the number to your contacts

To remove numbers from the call log that you don’t want anyone seeing, then open your Call Log.

This will normally be found on your Apps list or you can also go to your Dialler and find Logs or Call Logs.

Then press and hold on the contact you want to remove. When the Menu appears, press Delete.