Skip to content
TechBone
Samsung

Guides for Samsung Galaxy J7 Duo

520 guides

Photo, Video & Media2

Move Photos and Videos to an Album

Photos and videos from your camera or downloads often end up scattered across different albums, making it hard to find anything later. Samsung Gallery lets you move or copy several files into one album at once, but the prompt asking whether to copy or move can be confusing the first time you see it.

Open
Calls & Messages2

Show or Hide Frequently Contacted

If your Contacts app keeps showing a Frequently contacted section above your saved contacts, Samsung is tracking who you called or messaged most in the last 30 days. That list updates on its own and can expose contacts you would rather not have visible at a glance. The setting behind it sits in the Contacts app itself, not in your general phone settings.

Open
Network & Connectivity2

Enable Suspicious Network Detection for Wi-Fi

Connecting to a public Wi-Fi hotspot at a cafe or airport can quietly redirect your traffic through a rogue captive portal without any warning on screen. Samsung devices include a background check that flags this kind of suspicious network behavior, but the toggle for it is easy to miss and sometimes gets switched off during a reset. If the feature is disabled, your phone stays silent even when a network tries to intercept requests.

Open
Display & Home Screen2

Switch Navigation Bar Between Buttons and Gestures

If your Samsung phone shows three buttons at the bottom instead of a slim gesture bar - or the other way round - you can switch the layout yourself. Some people find the thin gesture bar too easy to trigger by accident, while others miss the dedicated Back button once gestures are active. The right setup depends on how confidently you swipe versus tap.

Open
Security & Privacy

Remove Biometric Data

If your Samsung phone still unlocks with an old fingerprint or a face scan that no longer feels safe, that biometric data is still sitting behind your Screen lock type setting. Switching the lock method clears every stored fingerprint and face profile at once, but it also drops your PIN, password or pattern until you set a new one. Apps that rely on Samsung Pass or biometric login will ask for a fallback method right after.

Open
Security & Privacy2

Enable Face Recognition Unlock

Registered your face on your Samsung phone but the lock screen still asks for a PIN or pattern? Face data alone does not turn on face unlock - the feature stays off by default even after enrollment. You need to switch it on separately before it works as an unlock method.

Open
Network & Connectivity2

Share Internet via Bluetooth Tethering

If a paired Bluetooth device cannot get online through your Samsung phone, Bluetooth tethering is likely still switched off. Pairing alone does not grant internet access - you need to enable that separately for the connected device. Without this step the connection stays limited to file transfer and audio, with no data passthrough.

Open
Security & Privacy2

Show or Hide Lock Screen Pattern Trail

If you swipe a pattern to unlock your Samsung phone, the line you draw stays visible on screen the whole time, which means anyone glancing over your shoulder can trace it. This visible trail is a separate setting from the pattern itself and can be switched off for more privacy. Nothing about your actual pattern shape or length changes when you hide the line.

Open
Display & Home Screen2

Back Up Secure Folder Data

Your Secure Folder content stays out of every regular Samsung backup, so files you drop inside it can vanish for good if the device is reset, lost, or replaced. Because the backup itself gets stored to your Samsung account rather than to the device backup, skipping this step leaves apps, photos, and documents inside Secure Folder completely unprotected.

Open
Network & Connectivity2

Switch to Mobile Data Automatically

When your Wi-Fi signal turns weak or drops out, apps can freeze or fail to load even though the Wi-Fi icon still shows full bars. Samsung phones include a 'Switch to mobile data' option that hands the connection over to your cellular network once Wi-Fi quality drops too low. Without it enabled, your phone keeps trying to use a bad Wi-Fi signal instead of switching over on its own.

Open
Network & Connectivity2

Share Wi-Fi Password via QR Code

Typing out a long Wi-Fi password for guests or family members gets old fast, especially with mixed-case letters and symbols. Samsung phones store the network credentials internally, so you can turn that saved password into a scannable QR code instead of reading it out loud. Anyone with a QR code scanner just points their camera at the screen and connects automatically.

Open
Calls & Messages2

Add Members to a Contact Group

Adding a new contact to an existing group is not obvious in Samsung Contacts, since the group screen looks read-only until you switch into edit mode. Miss that step and the new contact stays outside the group, so it never receives group messages or shows up for group calls. This mainly trips people up when they add contacts after a group already exists.

Open
System & Settings2

Change Default Browser App

If every link you tap opens in Samsung Internet instead of Chrome, Firefox, or whatever browser you actually prefer, your phone is still using Samsung Internet as the system default. This happens even after you install a new browser, because Samsung keeps the original default active until you switch it yourself. Once you know where that setting lives, moving to another browser only takes a few taps.

Open
Notifications & Focus2

Set the Volume Key Function in Camera

Pressing the side volume buttons on your Samsung phone snaps a photo or starts recording a video by default, which can surprise you while you're just trying to hold the phone steady. If you'd rather zoom in and out or control the system volume with those same buttons, the camera app has a separate setting for that. Getting this wrong means accidental presses either waste shots or leave you without quick volume access.

Open
Notifications & Focus2

Allow Repeat Callers in Do Not Disturb

When Do Not Disturb is on, your Samsung phone silences every incoming call, even from someone trying to reach you urgently. The Repeat callers exception is meant to let a second call from the same number through within 15 minutes, but many users find it either missing or not working as expected. Knowing where this setting lives helps you decide when silence is too strict.

Open
Network & Connectivity2

Set Up Access Point Name (APN) Manually

If mobile data won't load on your Samsung phone even with full signal, a missing or incorrect access point name (APN) is often the cause. Carriers normally push this setting the first time you activate a SIM, but a SIM swap, factory reset, or firmware update can wipe it out. Without a valid APN entry, your phone has no address to route data traffic to your carrier's network.

Open
Apps & Installation2

Allow or Block Display Over Other Apps

When a chat bubble or floating icon from an app like Facebook Messenger keeps covering your screen no matter what you open, that app has permission to draw over other apps. Some tools need this to work, like screen recorders or floating widgets, but many apps request it without a clear reason. If the overlay gets in the way or feels like a privacy risk, you can turn it off per app.

Open
Display & Home Screen2

Remove a Folder from the Home Screen

A folder full of apps keeps taking up space on your home screen even after you have moved the apps out of it. On Samsung phones, folders behave like ordinary app icons, which confuses users looking for a delete option in a settings menu.

Open
Security & Privacy2

Auto-Lock Secure Folder Settings

By default, Secure Folder on Samsung phones only locks once the screen turns off, which leaves your private apps and files exposed for longer than expected if someone grabs the phone while it's still active. If you want it to lock immediately, right after a restart, or after a fixed amount of time instead, that behavior sits in a setting most people never touch.

Open
Calls & Messages2

Add Birthday to a Contact

If a friend's contact card in Samsung Contacts has no space for a birthday, the field is not missing - it is just hidden by default. Samsung keeps birthday, anniversary and other important dates tucked away behind an extra menu step, so most people never notice it exists. Once you know where to look, adding the date takes only a few taps.

Open
Notifications & Focus2

Custom Notification Sound per App

On Samsung phones every app can technically get its own notification sound, but only if that app requests separate notification categories from the system. Apps that bundle everything into one generic channel keep the sound picker greyed out no matter what you try. That leaves you guessing whether a buzz is a message, a reaction, or a system alert.

Open
Language & Input2

Turn Autocorrect On or Off

If Samsung's keyboard swaps out words you typed correctly for something else the moment you hit space or send a message, autocorrect is stepping in. This happens because text recognition is active by default and rewrites anything it flags as a typo. Turning off Auto replace stops the keyboard from changing your words automatically.

Open
Other2

Number Row on Samsung Keyboard

If your Samsung keyboard suddenly shows a full row of digits above the letters, or that row is missing and you have to tap and hold a letter until a popup with the number appears, the number row layout has been switched. This setting decides whether typing numbers takes one tap or a tap-and-hold, and it changes how much space the keyboard takes up on screen.

Open
Other2

Search for a Word in a Message Conversation

Scrolling through a long text thread to find one phone number, address or name wastes time. Samsung's Messages app has a hidden search function inside each conversation that jumps straight to matching text. Matches get a white highlight and arrow controls let you step through every result without leaving the chat.

Open