Connect to Wi-Fi via QR Code
Typing out a long WLAN password on a guest's phone wastes time and usually ends in a typo or two. Samsung's Wi-Fi QR code scanner reads the network credentials straight from another device's shared code, so you skip manual entry completely. The catch: the other device has to generate and display that QR code first before your phone can scan it.
Add a Wi-Fi Network Manually
If your router does not appear in the Wi-Fi list, it usually means the network is hidden and not broadcasting its name. In that case you have to add it by hand using the exact SSID and, if the network is secured, the correct password. A typo in either field is the most common reason the connection still fails afterward.
Set Default SIM Card for Calls
If your Samsung phone keeps dialing out from SIM 1 even though you meant to call from SIM 2, the default call SIM is likely locked to the wrong card. You can also set the phone to ask every time before placing a call, which helps when you keep one SIM for work and one for personal contacts. This same setting can be changed directly from the status bar shortcut, not just deep inside the settings menu.
Turn Wi-Fi On or Off
If your Samsung phone refuses to connect to your router or keeps burning through battery searching for networks, the Wi-Fi toggle might simply be off or stuck on. Wi-Fi handles both local file sharing and your main path to the internet, so a wrong setting here blocks every online app at once. Switching it on or off from the system settings usually clears up connection drops and unwanted background scanning.
Set Up a VPN Connection
Streaming services blocking your location, unsecured public Wi-Fi, or a company network that only accepts encrypted traffic - all of these push you toward a VPN. On Samsung phones the connection only routes through a VPN server once a valid profile has been created manually, since One UI does not ship with preset providers.
Turn Mobile Hotspot On or Off
If you need to share your Samsung phone's mobile data connection with a laptop, tablet, or another phone, Mobile Hotspot has to be switched on first. Without it, nearby devices cannot detect your phone as a Wi-Fi access point at all. Many people also struggle to find where this toggle sits once they need to turn it off again to save data or battery.
Turn NFC On or Off
Contactless payments, file sharing, or tag scanning suddenly stop working on a Samsung phone when NFC gets switched off, often without you noticing. Some users turn NFC off on purpose to save a little battery or stop apps from reading tags in public. The toggle sits inside the network settings rather than a quick shortcut.
Reset Network Settings
If WLAN keeps dropping, Bluetooth won't pair, or mobile data refuses to connect on your Samsung phone, a corrupted network profile is often the cause. Reinstalling drivers or restarting the phone rarely fixes it, since the faulty configuration stays stored in the system. Resetting network settings clears WLAN, Bluetooth and mobile network configs back to factory state, but it also erases every saved WLAN password.
Turn Wi-Fi Calling On or Off
If calls keep dropping in areas with weak mobile signal but strong Wi-Fi, your Samsung phone probably has Wi-Fi Calling turned off. This feature lets the device route voice calls over a wireless network instead of the regular cellular connection. Whether it needs to be on or off depends on your carrier and where you spend most of your time on a call.
Delete an APN on Samsung
If you removed the wrong Access Point Name on your Samsung phone, mobile data, SMS, and MMS can stop working right away. The delete option sits in the same menu where APNs get created, so it is easy to tap the wrong entry by mistake. Only remove profiles that are not currently active for your carrier.
Turn Location (GPS) On or Off
If navigation apps cannot find your position or refuse to load a route, Location access is often switched off on your Samsung phone. Weather widgets, Find My Mobile, and location-tagged photos rely on the same GPS toggle, so one setting affects several features at once. Turning it off saves battery but breaks any app that needs your real-time position.
Pair a Bluetooth Device
If your Samsung phone will not connect to a speaker, headset, or car radio, the two devices are simply not paired yet. Phones and speakers usually just need to confirm the connection on screen, but many car radios ask for a numeric code to be typed in on the Samsung device. Missing that step is the most common reason Bluetooth audio never starts.
Turn Bluetooth On or Off
If your Samsung phone keeps reconnecting to a car stereo or speaker you did not want right now, Bluetooth is still active in the background. Leaving the radio running also uses a small amount of battery even with nothing paired. Switching it off stops these automatic reconnections until you turn it back on.
Turn On or Off Roaming Assistance
When you dial a saved contact while abroad, Samsung often sends the number exactly as stored, without adding the country code. That can make calls fail or connect to a random local number in the country you are roaming in instead of reaching your contact back home. Roaming assistance decides whether Samsung fixes this prefix automatically or leaves it to you.
Rename a Paired Bluetooth Device
If your phone keeps showing a paired accessory under its factory name instead of something you can actually recognize, that label comes from the device itself, not from your phone. Samsung just displays whatever name the headphones, speaker or car kit broadcasts over Bluetooth. Once several accessories use similar generic names, telling them apart in your Bluetooth list gets confusing.
Connect via Wi-Fi Direct
When two Samsung phones are next to each other but can't share files because they're not on the same WLAN, Wi-Fi Direct solves it. This peer-to-peer connection skips the router entirely and links two devices straight to each other. It only works if both devices support Wi-Fi Direct and have the feature open at the same time.