In today's world, lack of internet access can be a critical issue, especially when you're outside the coverage area of your home or public router. A situation where one iPhone can't access the internet, while the other has a stable connection to the cellular network, is resolved in a matter of seconds. Built-in function modem mode allows you to turn your smartphone into a hotspot, providing Internet access to other devices, including tablets, laptops, and, of course, other phones Apple.
Using your iPhone as a router isn't just a way to save on roaming charges, it's also a reliable solution for working while traveling. Technology Personal Hotspot Creates a secure network that you can connect to via Wi-Fi, Bluetooth, or a USB cable. In this article, we'll cover in detail how to set up data transfer between devices, which security settings to choose, and what to do if the connection fails the first time.
The setup process has been simplified as much as possible by the operating system developers. iOSHowever, there are some nuances you should be aware of beforehand. For example, it's important to consider your mobile carrier's data plan, as data sharing may be billed separately or have speed limits. It's also worth remembering that active tethering drains the battery significantly faster, so it's best to keep the device connected to a power source during extended use.
⚠️ Important: Before activating tethering, be sure to check the terms of your mobile plan. Some providers block tethering or charge additional fees for using your phone as a hotspot.
Checking compatibility and preparing devices
Before you begin setup, you need to make sure both devices are technically ready for use. Internet tethering is built into all modern iPhone models, starting with iPhone 4, however, for stable operation it is recommended to use devices with the installed version iOS 13 or newer. This will ensure support for current encryption protocols and faster pairing between devices.
First, make sure that cellular data is enabled on the device that will be sharing the internet. Without active mobile data, you won't be able to create a hotspot. You should also make sure that the module is enabled on both phones. Bluetooth And Wi-Fi, since these are the interfaces used to detect and connect devices, even if you plan to use a cable connection for stability.
☑️ Checking readiness for distribution
If you plan to frequently use two iPhones together, it makes sense to add the devices to each other's contact list. This will allow you to use the feature Instant Hotspot, which allows you to connect to a hotspot without entering a password, simply by selecting the device from the list of available networks. For this feature to work, both phones must be signed into iCloud using the same ID. Apple ID or they must be in a Family Sharing group.
Setting up Personal Hotspot on the Sharing iPhone
The first and most important step is to correctly configure the device that will act as the router. Go to the menu Settings and find the section Cellular communications (or immediately Modem mode, if it is in the main menu). Here you need to activate the switch Allow othersOnce this setting is enabled, your phone will start broadcasting a signal and other devices will be able to detect it.
In this menu, you can also change the device name and connection password. By default, the system generates a complex random password, but you can change it to something easier to remember while still adhering to security requirements (at least 8 characters). Changing the device name is especially useful if there are many people nearby with iPhones—this will make it easier to find your access point in the list of networks.
Hidden APN settings
If the "Tethering & Personal Hotspot" option is missing from the settings, you may need to manually enter your access point name (APN). To do this, go to Settings → Cellular → Cellular Data Network → Tethering & Personal Hotspot. Enter the information you received from your carrier in the APN, Username, and Password fields. After entering the information, restart your device.
It's important to note that while the tethering settings screen is open, your device is visible to all nearby devices. If you're in a crowded area, it's best not to leave this screen open for too long after connecting to prevent unauthorized access, although you'll still be prompted for a password.
⚠️ Note: The settings interface may vary slightly depending on your iOS version and iPhone model. If you can't find the option, search for "Personal Hotspot" in the settings.
Connecting a second iPhone to the created network
Once the hotspot is activated, take the second iPhone that needs internet. Open Settings and go to the section Wi-FiIn the list of available networks, you'll see the name of the first device, marked with a characteristic icon of two interlocking rings. Tap it to begin the pairing process.
The system will prompt you to enter the password you set on the sharing device. Enter it carefully, paying attention to the capitalization. If the devices are in the same ecosystem, Apple ID or in a Family Sharing group, a password may not be required—a confirmation request will appear on the screen of the sharing phone, which must be accepted.
- 📱 Make sure that Airplane mode is turned off on the receiving device.
- 🔒 Make sure you're entering the password for the modem mode, not the Wi-Fi network.
- 📶 If you have problems finding a network, try moving closer to the signal source.
After successfully entering the password, an icon will appear in the upper right corner of the receiving iPhone's screen. two linked rings (or the "Modem Mode" message in the status bar), indicating an active connection. You can now open a browser or apps and check the network.
Alternative connection methods: USB and Bluetooth
While Wi-Fi is the most popular method of sharing, it doesn't always provide the best stability or speed. For mission-critical tasks like video conferencing or downloading large files, a wired connection is recommended. To do this, connect your iPhones to each other using a cable. Lightning or USB-C (depending on model), using an adapter if necessary.
When connecting via cable for the first time, the receiving device may ask "Trust this computer?" Click "Trust" and enter the passcode. This method is advantageous because it simultaneously charges the receiving device and ensures the highest possible data transfer speed, eliminating radio interference.
The third option is to connect via BluetoothThis method is the least energy-consuming, but provides the slowest data transfer speed. It's only suitable for background tasks like checking email or messaging apps, but not for watching videos. To connect, go to Settings → Bluetooth On both devices, pair them and in the Bluetooth settings, select the connected device to access the network.
| Connection method | Transfer speed | Energy consumption | Stability |
|---|---|---|---|
| Wi-Fi | High | High | Average |
| USB cable | Maximum | Charging the battery | High |
| Bluetooth | Low | Low | Average |
Family Sharing and Instant Connect
The Apple ecosystem offers a unique feature that eliminates the need to enter passwords every time. If both devices belong to members of the same family and are set up using the Family Sharing, the connection occurs automatically. The group organizer can allow other participants to use their internet connection without confirmation.
To set this up, go to Settings → [Your name] → Family Sharing. Add family members by sending an invitation. Then, in the section Modem mode turn on the option Allow family membersAfter this, when a family member's device tries to connect to your network, they won't be asked for a password—they'll just need to click "Connect."
This feature is especially useful for parents who want their children to always have internet access but still want to control who has access to their plan. You can disable access for a specific device at any time directly from the settings menu, without changing the master password.
Troubleshooting connection issues and errors
Despite the well-functioning system, users may encounter situations where the iPhone doesn't detect the network or doesn't connect to it. One of the most common causes is a network configuration error. In this case, resetting the network settings on the receiving device will help. Go to Settings → General → Transfer or reset iPhone → Reset → Reset Network SettingsPlease note that this will delete saved Wi-Fi network passwords.
Another common issue is that the "green bar" in modem mode doesn't light up, even though the connection appears to be established. This could mean that your carrier is blocking data sharing or that your high-speed internet limit has been reached. Check your balance and plan terms in your carrier's app.
- 🔄 Restart both devices - this solves 90% of connection problems.
- ✈️Turn Airplane mode on and off on both phones.
- 📱 Make sure the tethering device is in the tethering settings screen while searching.
If all else fails, try updating the software on both devices to the latest available version. Apple regularly releases patches that fix bugs in network modules and communication protocols.
⚠️ Note: If you're using a corporate SIM card, your network administrator may have disabled the tethering feature at the carrier level. In this case, tethering will be impossible without contacting your company's support team.
Optimizing traffic and battery consumption
Sharing your internet is a resource-intensive process. To prevent your mobile data from running out unexpectedly, set up limits. In the section Cellular communications You can track your data usage. It's also recommended to disable automatic app updates and iCloud backup on your internet-connected device if you're outside a Wi-Fi zone.
To conserve battery life on the sharing device, reduce screen brightness and close background apps. Tethering puts significant heat on the processor, so in hot weather, it's best to remove your phone's case for better heat dissipation. Using a dark interface theme can also slightly reduce power consumption on models with OLED screens.
Remember that the internet speed on the receiving device directly depends on the quality of the cellular signal on the transmitting iPhone. If you're in an area with poor reception (1-2 bars on the signal), your speed will be low and your battery will drain very quickly due to constant attempts to retransmit the signal.
Frequently Asked Questions (FAQ)
Is it possible to share Wi-Fi if the iPhone doesn't have a SIM card?
No, the device requires access to a cellular network via a SIM card for tethering to work. However, if an iPhone without a SIM card is already connected to a Wi-Fi network, it won't be able to broadcast that internet connection as a repeater; this isn't supported by standard iOS features.
Does the operator see that I am distributing the Internet?
Yes, carriers can see traffic patterns (TTL requests), which allows them to determine whether tethering is being used. If your plan doesn't include free tethering, you may be charged additional fees or have your speed throttled.
How many devices can be connected to one iPhone?
Apple officially claims to support up to five simultaneous Wi-Fi connections. However, the actual number may vary depending on the iPhone model, iOS version, and processor load.
Why does the battery drain quickly when distributing?
The Wi-Fi module operates in constant active data transmission mode, which consumes a lot of power. Furthermore, the processor processes network packets for all connected devices, which creates an additional load.
Does tethering work abroad?
Technically, yes, the feature works anywhere there's cellular coverage. However, mobile data roaming costs can be very high, so be sure to check with your carrier before traveling.