A situation where a mobile phone is broadcasting internet, but a tablet stubbornly ignores it, is a classic scenario faced by many users. This can happen at the most inopportune moments: on the road, at the dacha, or when the main home provider is temporarily unavailable. The feeling of helplessness in the face of two working devices that "don't want to talk" is familiar to anyone who has ever tried to set up a local area network in the field.
This behavior can be caused by software glitches in operating systems or incompatibilities in hardware modules. Often, the problem lies in frequency ranges, security settings, or simple power saving issues. Understanding the physics of data transmission will help you quickly locate the source of the problem and fix it without the need for specialists.
In this article, we will examine in detail the technical aspects of interaction Android And iOS We'll explain the difference between 2.4 GHz and 5 GHz frequencies, and provide step-by-step instructions. You'll learn how to properly configure an access point so it's visible to all your devices.
Technical reasons for frequency band incompatibility
The most common reason why a tablet can't detect Wi-Fi from a phone is a frequency band mismatch. Modern smartphones, especially flagship models, create a hotspot within the band by default. 5 GHzThis ensures high data transfer speeds, but older or budget tablets may be equipped with modules that operate exclusively in the 2.4 GHz range.
If your tablet has a single-band Wi-Fi module, it's physically unable to "see" a network broadcast on a different frequency. This isn't a software issue, but a hardware limitation. In this case, you'll need to force the phone to switch to an older, but compatible, standard.
- 📡 2.4 GHz band — has a greater range and penetration of walls, but is often overloaded by neighboring routers and microwaves.
- 🚀 5 GHz band - provides high speed and purity of the air, but has a shorter range and penetrates obstacles worse.
- 🔄 Automatic selection - Some phones decide for themselves which frequency to use, which can lead to periodic network loss for older devices.
To change this setting, you need to go to the access point settings. The path may vary depending on the firmware, but it is usually located in the Settings → Connections → Mobile hotspot and tethering → Hotspot settingsHere you need to find the “Range” or “Band” item and select a value. 2.4 GHz or All ranges.
⚠️ Please note: After switching the band to 2.4 GHz, the maximum internet speed on your tablet may decrease, but the connection stability will increase significantly.
Please note that when changing bands, a network may temporarily disappear from the list of available networks. This is normal—your phone's wireless module is adjusting to the new broadcast frequency. Wait a few seconds and refresh the list of networks on your tablet.
Hidden SSID and Visibility Settings Issues
Another common reason for a network being "invisible" is the network name (SSID) hiding feature. Some users enable this option for security reasons, believing that this prevents others from using their access point. However, on a tablet, this simply means the network won't appear in the general list of available connections.
If you previously connected to this network and it disappeared, it's possible the security settings have been changed, and the device requires re-authorization with full credentials. If the network is hidden, the tablet won't initiate a connection because it doesn't know the broadcaster exists.
To fix this, check your visibility settings in your phone's menu. Find the "Hidden network" or "Show my device" switch and make sure it's off. The network name should be set to public.
It's also worth paying attention to the characters in the network name (SSID). Using emoji, Cyrillic, or special characters in the access point name can cause identification issues on some tablet models, especially older versions. AndroidIt is recommended to use only Latin letters and numbers.
IP address conflicts and DHCP settings
When a tablet finally "sees" the network but can't connect or the connection keeps dropping, the problem often lies in IP address distribution. The phone, acting as a router, starts the service DHCP, which should assign the tablet a unique address on the local network.
Sometimes this process fails: the tablet may try to use a static IP address that's already taken or isn't suitable for the current subnet. Or the address distribution server on the phone may be frozen and not assign a new address to the connecting device.
The solution lies in resetting the network settings or manually checking the configuration. On your tablet, select your network in the Wi-Fi settings, tap "Forget Network," and try connecting again. This will force the device to request a new IP address.
| Parameter | Recommended value | Description |
|---|---|---|
| IP address | Automatic (DHCP) | Allows the phone to generate the address itself |
| Gateway | 192.168.43.1 (usually) | The address of the telephone distributor itself |
| Prefix length | 24 | Standard subnet mask for home networks |
| DNS 1 | 8.8.8.8 | Google Server (alternative) |
If automatic address acquisition doesn't work, you can try manually entering static data, ensuring it's on the same subnet as your phone. However, for most users, resetting your network settings remains the optimal solution.
☑️ Connection diagnostics
Impact of energy saving and background processes
Modern operating systems aggressively optimize power consumption. If the phone's battery is low, the system may automatically disable Wi-Fi or reduce transmit power to conserve battery life. As a result, the tablet loses network connectivity or the signal becomes too weak to establish a stable connection.
Additionally, some memory cleaners and antivirus programs may block the creation of a hotspot, considering it suspicious or resource-intensive. Check if your phone is in "Power Saver" or "Airplane" mode.
It's also worth keeping in mind that the number of connected devices may be limited by your phone settings. If the limit is reached, new devices (such as your tablet) will not see the network or will be denied connection.
⚠️ Note: In power saving mode, your phone may turn off the hotspot after a set period of inactivity, even if your tablet is trying to connect.
For stable operation, it's recommended to connect your phone to a charger while sharing data. This will remove transmitter power limitations and prevent the module from shutting down unexpectedly.
Specifics of working on iOS and Android
Ecosystems Apple And Google have different approaches to security and connection management. Owners iPhone often encounter the fact that the tablet on Android The "Mobile Hotspot" network isn't visible. This is due to Apple's security protocol and frequency preferences.
On devices iPhone By default, the "Maximum Compatibility" feature is enabled. If it's disabled, the phone only broadcasts Wi-Fi on the 5 GHz band, which may be invisible to older tablets. Enabling this feature switches the network to 2.4 GHz mode.
On Android On some devices, the issue may be related to app permissions. If you're using a third-party app for Wi-Fi sharing, make sure it has all the necessary permissions to change system settings and access geolocation (which is often required for a Wi-Fi scanner to work).
iPhone Security Features
Apple uses special tokens to authorize devices in its ecosystem. If you connect an Android tablet to an iPhone, you may be required to manually enter the passcode, even if the devices were previously paired via iCloud. Make sure the passcode in the modem settings contains only valid characters.
Updating the operating system on both devices often resolves compatibility issues, as manufacturers regularly release patches that fix network protocol errors.
Hardware faults and distance
The physical factor shouldn't be discounted either. The antennas in smartphones and tablets are compact and susceptible to interference. If the devices are far apart or there are metal barriers between them, the signal may be too weak to detect.
It's also possible that there's a hardware problem with the Wi-Fi module on one of the devices. If your phone isn't sharing Wi-Fi with any other devices, and your tablet isn't seeing any networks (even routers), the problem could be hardware-related.
This is easy to check: try sharing your phone's internet connection with another device (a laptop or another smartphone). If the problem persists on both devices, there's likely a physical defect in the antenna or controller.
FAQ: Frequently Asked Questions
Why can my tablet see other Wi-Fi networks but not the network from my phone?
The problem is most likely a frequency band issue. Your phone uses the 5 GHz band, but your tablet only supports 2.4 GHz. Go to your phone's hotspot settings and change the band to 2.4 GHz or "Auto."
Can antivirus software block the creation of an access point?
Yes, some aggressive antivirus programs or firewalls can block outgoing connections or local network creation. Try temporarily disabling protection or adding the "Access Point" app to the exceptions.
What should I do if my tablet says "Obtaining IP address" and then drops the connection?
This indicates an address conflict or a DHCP server failure on the phone. Try selecting "Forget network" in the Wi-Fi settings on the tablet and then reconnecting. Restarting both devices may also help.
Does the telecom operator influence the ability to distribute Wi-Fi?
Yes, some mobile operator plans prohibit or limit tethering. In this case, the network may be created, but the internet on the tablet won't work, or the operator will block the connection at the network level.