Device owners Samsung Users often encounter a situation where their tablet stops connecting to their home network, displaying a mysterious message about "unknown security type." This error blocks internet access, leaving the user without a connection, and most often occurs after updating the operating system or changing router settings. The problem stems from incompatible encryption protocols between the access point and the mobile device.
System Android, on which the tablets are based Galaxy Tab, has become stricter about outdated data protection methods. If your router uses an older encryption standard, for example, WEP or WPA/TKIP, a modern device may simply refuse to work with it, considering the connection unsafe. This isn't a hardware failure, but a software conflict that requires tweaking the router's settings.
In this article, we'll explore why protocol conflicts occur and how to force devices to "understand" each other. You won't need any advanced programming knowledge, but you'll need to access your router's control panel and change the wireless network settings. Sometimes, simply changing the encryption type is enough to get your tablet working. Samsung started working stably again.
⚠️ Please note: Changing Wi-Fi security settings will affect all devices on your network. After changing the password or encryption type, you will need to reconnect your smartphones, laptops, and smart devices.
Reasons for the occurrence of a security type error
The main cause of the failure is a desynchronization of data protection standards. The router may broadcast a signal using the operating mode that the tablet Samsung interprets this as an error. The operating system is attempting to determine the exact encryption algorithm but is receiving inconsistent data from the access point.
Often, the problem stems from an automatic router firmware update that has changed the default settings. The age of the equipment also plays a role: older router models may not support modern standards. WPA3 or WPA2-AES, which require new versions AndroidAs a result, a situation arises where the device sees the network but cannot complete authorization.
There's also a software glitch on the tablet's end. The saved network profile may contain incorrect security information. In this case, the device "remembers" the old settings, even though the router is now operating according to the new settings. This configuration conflict leads to an endless connection loop or an immediate disconnection.
Diagnostics of current network parameters
Before making any changes, you need to find out exactly what type of security your router is currently using. This can be done using any other device that is successfully connected to Wi-Fi, such as a laptop. Windows or another smartphone. On your computer, open the wireless connection properties and go to the security tab.
Here you will see a field called "Security Type". If it says WEP or WPA-Personal (TKIP), then this is the root of the problem. Tablets Samsung with version Android 10 and above may ignore such networks or require manual specification of parameters, which is not always possible through the standard interface.
It's also worth checking the frequency range. Some tablets Galaxy Tab old series only work in the range 2.4 GHz, while new routers may only activate by default 5 GHz With certain types of encryption, mismatched frequencies and protocols often cause the "Unknown Type" error.
Configuring your router for compatibility
To fix the error, you need to log into the router's web interface. This is usually done through a browser at 192.168.0.1 or 192.168.1.1After entering the administrator login and password, find the section responsible for the wireless network. It may be called Wireless, Wi-Fi or Wireless mode.
Inside the section, find the “Security” subsection (Security). Here you need to change the "Version" or "Security Mode" parameter. Select the value WPA2-PSK (AES)This is the most universal and reliable standard, supported by all tablets. SamsungAvoid mixed modes WPA/WPA2If they cause problems, it is better to leave them alone. WPA2.
After selecting the correct encryption type, be sure to save the settings with the button Save or ApplyThe router may reboot. If you have a dual-band router, make sure the setting is applied to both bands (2.4 GHz and 5 GHz), or separate them into different names (SSIDs) so the tablet connects to the most compatible one.
☑️ Checking router settings
Reset and reconnect on the tablet
After changing the router settings, the tablet Samsung may continue to try to connect with the old data. You need to delete the saved network profile. Go to Settings → Connections → Wi-Fi, click on the name of your network and select Delete network or Forget the network.
Now scan for available networks again. Find your Wi-Fi network and enter the password. Since the router's security type has been changed to compatible, the tablet should correctly detect the protocol and authenticate. If the error persists, try rebooting the tablet by holding down the power and volume buttons.
In rare cases, resetting network settings to factory defaults can help. This will delete all saved Wi-Fi passwords and Bluetooth settings, but it often resolves underlying software conflicts. Path to the function: Settings → General Settings → Reset → Reset Network Settings.
⚠️ Note: Reset Network Settings will not delete your personal files, photos, or apps, but it will erase all Wi-Fi passwords and paired Bluetooth devices.
Protocol compatibility table
Understanding the differences between encryption standards helps you choose the right setup. Below is a table showing the compatibility of various protocols with devices. Samsung and their level of security.
| Security type | Compatibility with Samsung | Level of protection | Recommendation |
|---|---|---|---|
| WEP | Low (bugs on newer Androids) | Critically low | Do not use |
| WPA-TKIP | Medium (often causes errors) | Short | Replace with AES |
| WPA2-AES | High (optimal) | High | Recommended |
| WPA3 | Only new models | Maximum | For flagships |
What is TKIP and why is it bad?
TKIP was developed as a temporary solution to replace WEP. It is vulnerable and limits Wi-Fi speed to 54 Mbps. Modern Samsung devices may block TKIP connections for security reasons.
Troubleshooting DHCP and IP Addressing Issues
Sometimes a security error masks a problem with obtaining an IP address. If the router is configured to assign addresses statically or has MAC address restrictions, the tablet will be unable to complete the connection. In this case, the security error message may be misleading.
Try changing the IP settings on the tablet itself. In the Wi-Fi menu, click the gear icon next to your network, select IP settings and switch from DHCP on StaticEnter the gateway address (usually 192.168.0.1 or 1.1) and DNS (e.g. 8.8.8.8). This will prevent automatic address assignment errors.
Also, check if MAC address filtering is enabled on your router. If it is, add your tablet's MAC address. Samsung in allowed. The device address can be found in Settings → About phone → Status.
When is it time to update your router firmware?
If none of the methods helped, it is possible that the router software itself contains bugs that prevent proper handshake with new devices. SamsungManufacturers regularly release updates that fix compatibility issues.
Go to your router control panel and find the section System Tools or AdministrationCheck for updates. If a new version is available, download it from the manufacturer's official website and install it through the web interface. The process may take several minutes, during which time the internet will be unavailable.
⚠️ Caution: Do not interrupt the router firmware update process or turn off the power. Interrupting the data transfer may render the device (brick) completely inoperable.
After updating, repeat the security setup procedure. New software versions often automatically adjust encryption settings to be more compatible. If this doesn't help, consider replacing your router, as older models may not physically support the modern communication standards required by new tablets.
Why does my Samsung tablet say "Saved" but there is no internet?
The "Saved" status means the password is correct and the security type is defined, but the device isn't receiving an IP address from the router or the router doesn't have access to the external network. Check your ISP cable and DHCP settings.
Can WEP be used on older devices?
Technically, it's possible, but extremely insecure. A WEP password can be cracked in minutes. If you have a very old device, it's better to create a guest network on the router with separate settings, isolated from the main one.
Does resetting the router solve the problem?
A hard reset of the router will restore all factory settings, including the network name and password. This is guaranteed to remove complex misconfigurations, but will require a complete reconfiguration of the internet and Wi-Fi.