Many users are familiar with the situation where a tablet stops detecting the home network or endlessly tries to obtain an IP address. This happens suddenly: an hour ago, the device was working reliably, but now the Wi-Fi icon is grayed out or completely gone. Most often, the problem stems from a software glitch on the device's end or a temporary freeze in the router's wireless module.
However, recurring connection errors should not be ignored, as they may indicate deeper security setting conflicts or a physical fault with the antenna. Diagnostics The troubleshooting process should begin with a simple analysis: are other devices connecting to the same access point? If smartphones and laptops work normally, then the source of the problem is localized to the tablet.
In rare cases, the cause is a router firmware update that changed the encryption standard or frequency range. Before taking your device to a service center, it's worth going through the step-by-step checklist we'll cover below. A systems approach will allow you to eliminate 90% of errors without the intervention of specialists.
Software glitches and temporary network errors
The most common, but often overlooked, cause is a temporary software glitch. Operating systems Android And iPadOS They're not ideal, and background processes can jam, blocking network interfaces. The first step is to perform a full reboot of the tablet, not just turning off the screen. This clears the RAM and restarts all system services.
It's also worth checking that Airplane Mode isn't enabled on your device. Sometimes the system doesn't exit this mode correctly, leaving the Wi-Fi module disabled by software. In such cases, manually toggling the wireless network slider can help: turn off Wi-Fi, wait 10 seconds, and then turn it back on.
⚠️ Note: If after rebooting, your tablet continues to search for networks but doesn't find yours, try rebooting the router itself. Unplug it for 30 seconds to clear the cache and reconnect to your ISP.
It's important to note that temporary glitches often occur after unsuccessful app updates or an operating system update. If the problem appears immediately after an update, the new software version may be conflicting with the Wi-Fi drivers for your tablet model.
Problems with saved networks and passwords
A common cause of connection failure is a conflict with saved network profiles. The tablet may be attempting to connect to a network with outdated security settings or an incorrect password that was previously changed on the router. In the list of available networks, you may see "Authentication Error" or "Obtaining IP Address" next to yours.
To resolve this issue, you need to delete the old network profile. Go to Wi-Fi settings, select your network from the list of saved networks, and tap "Forget Network" or "Delete." Then, search again and re-enter the password, paying close attention to the capitalization.
Particular attention should be paid to hidden networks. If your access point is not broadcasting SSID (network name), the tablet may not see it in the general list. In this case, you'll need to manually add the network, specifying its name and encryption type.
- 📱 Check if you have confused networks with similar names (for example, "Home_WiFi" and "Home_WiFi_5G").
- 🔑 Make sure that Caps Lock is not enabled on your tablet keyboard when entering your password.
- 🔄 Delete all old public network profiles (cafes, airports) that may create conflicts.
Sometimes resetting network settings to factory defaults helps. This will delete all saved Wi-Fi passwords and Bluetooth settings, but it often resolves the issue of the tablet "forgetting" the correct connection settings.
☑️ Check network settings
Conflicts between the 2.4 GHz and 5 GHz frequency bands
Modern routers often operate in two bands: 2.4 GHz and 5 GHz. Older tablet models may not physically support the 5 GHz frequency, so they simply won't see the network if the router is broadcasting only that frequency. Conversely, newer devices may ignore the 2.4 GHz network if the "Smart Connect" feature, which combines both bands under a single name, is enabled.
If your tablet is a budget or older model, it most likely only supports the standard 802.11n or 802.11g, which operates exclusively on 2.4 GHz. In this case, you need to go to the router settings and ensure that the 2.4 GHz network is active and has a separate name (SSID) from the 5 GHz network.
⚠️ Note: Router interfaces are constantly being updated. The location of frequency range settings may vary depending on the model (TP-Link, ASUS, Keenetic). Check the manufacturer's official website for the latest instructions for your device.
It's also worth checking the channel width. For the 2.4 GHz band, the optimal width is 20 MHz. Setting the channel width to 40 MHz or "Auto" on noisy frequencies can result in an unstable connection or even a complete loss of connection on older tablets.
How do I find out what band my tablet supports?
Look at the exact model of your tablet (usually on the back cover or in the box) and search for "model + specs" or "specifications." The Wi-Fi section will indicate the standard: if it only has 802.11 b/g/n, it's 2.4 GHz. If it has 802.11 ac or ax, it supports 5 GHz.
IP addressing and DNS errors
Sometimes the tablet detects the network, enters the correct password, but gets stuck at the "Obtaining IP address" stage. This indicates a problem with the router's DHCP server or the static settings on the tablet itself. The device may have a static IP address that conflicts with the current network addressing.
Go to the advanced Wi-Fi connection settings on your tablet and find "IP Settings." Change the setting from "Static" to "DHCP." This will allow the router to automatically assign the correct address.
If the problem persists, try manually entering your DNS servers. ISP DNS servers are often slow or block some requests. Using public DNS servers from Google or Cloudflare can speed up your connection.
| Parameter | Value for Google DNS | Value for Cloudflare | Description |
|:--- |:--- |:--- |--- |
| DNS 1 (Preferred) | 8.8.8.8 | 1.1.1.1 | Primary Domain Name Server |
| DNS 2 (Alternative) | 8.8.4.4 | 1.0.0.1 | Backup server in case of failure |
| Protocol | IPv4 | IPv4 | Standard Addressing Protocol |
| Response Speed | High | Very High | Affects page loading speed |
In some cases, manually entering the IP address helps. If the router's address is 192.168.0.1, then you can assign the tablet an address of 192.168.0.150 to avoid conflicts with other devices on the network.
The influence of protective screens and cases
Few people realize that a physical accessory can block a signal. Metallic cases, flip cases with magnetic closures, or thick shockproof cases can shield a tablet's antenna. Wi-Fi antennas are often located around the perimeter of the case, and blocking these areas with metal critically reduces signal strength.
If the tablet stops connecting only when it's in a case, remove it and check the connection. It's also worth inspecting the back cover for a swollen battery. A swollen battery can physically displace internal components, including the antenna module, disrupting the connection.
Also, check to see if the antenna area is covered with a protective film with a metalized coating (such as anti-spy films or framed glass screen protectors). Even a thin layer of metal can dampen radio waves.
- 🛡️ Remove the case and check the signal level "naked".
- 🔋 Inspect the case for battery swelling (peeling of the back cover).
- 📶 Move closer to the router to eliminate the influence of wall thickness and obstacles.
Resetting network settings and extreme measures
If software methods don't help, the only option left is to perform a full network reset. Unlike a full factory reset, this only affects Wi-Fi, Bluetooth, and mobile data. Your photos, apps, and contacts will remain intact.
On Android the path usually looks like this: Settings → System → Reset settings → Reset Wi-Fi & mobile networksOn iPad: Settings → General → Transfer or reset iPad → Reset → Reset network settings.
⚠️ Note: After resetting your network settings, you will need to re-enter passwords for all Wi-Fi networks and re-pair Bluetooth devices, such as headphones and watches.
In the most extreme case, when the tablet can't detect any networks at all (even neighboring ones), it could be a hardware issue. This could be a loose antenna cable inside the case or a burned-out Wi-Fi module. Only diagnostics at a service center can help.
Frequently Asked Questions (FAQ)
Why does the tablet say "Saved" but won't connect?
The "Saved" status means the password is correct, but the handshake between the devices failed. This is most often caused by MAC address filtering on the router or incompatible encryption standards (WPA2/WPA3). Try changing the security type on the router to WPA2-PSK (AES).
My tablet sees the 5 GHz network but won't connect. What's wrong?
Your tablet is likely too far from the router. The 5 GHz band has less wall penetration than 2.4 GHz. If the signal is weaker than 2-3 bars, the connection will constantly drop. Try switching to a 2.4 GHz network.
Can a virus block Wi-Fi on a tablet?
Direct blocking of the Wi-Fi module by viruses is rare. However, malware can change proxy or DNS settings, creating the illusion that the network is down. Scan your device with an antivirus and reset network settings.
What should I do if Wi-Fi disappears after updating Android?
Updates sometimes mess up driver configuration files. Besides resetting the network, try entering Recovery mode and clearing the Cache Partition (this won't delete any data). If that doesn't work, the new OS version may contain a bug for your model. You should roll back to the previous version or wait for a patch.