It's quite common for one device to have internet access but another to not. For example, you might run out of data on your primary SIM card but have extra gigabytes on your second phone, or your home router might fail at the most inopportune moment. Apple ecosystem users can easily solve this problem by turning their smartphone into a fully-fledged router.
Technology Personal Hotspot (Personal Hotspot) allows you to wirelessly share 4G or 5G mobile internet with other devices. This process doesn't require installing third-party apps or complex network settings, as all the necessary tools are built into the operating system. iOSHowever, for stable operation, it is important to consider security and power consumption settings.
In this article, we'll cover all available connection methods in detail, the nuances of password settings, and potential errors you might encounter. You'll learn how to optimize battery life and ensure maximum data transfer speeds between devices. Understanding these mechanisms will help you stay online, even without access to a landline network.
Preparing devices and checking the tariff
Before setting up, make sure both devices are ready to use. The iPhone that will be sharing the internet (the host) must have an active SIM card with data service enabled. Your carrier must support tethering, which is common in modern plans, but sometimes requires separate activation.
Make sure the wireless modules are enabled on both smartphones. For the security system to function properly and detect devices within range, the interfaces must be active, even if the connection is via a cable. Check the version iOS on both gadgets is not critically outdated, as old encryption protocols can block the connection.
⚠️ Attention: Before turning on tethering, make sure you have an unlimited data plan or have some data left. Wi-Fi consumes data significantly faster than normal use of the browser on the phone.
It's also important to check the cellular network signal strength. If the source device only shows one bar or EDGE, then connecting a second device is impractical—the speed will be extremely low. Ideally, the host should have a stable LTE or 5G.
Setting up a hotspot on your primary iPhone
The first step is to properly configure the device that will act as a router. You need to go to the settings menu and find the appropriate section. The path may vary slightly depending on the operating system version, but the logic remains the same for all models. iPhone 6 to the latest iPhone 15 Pro.
Open the Settings app and find "Cellular" or "Mobile Data." Within this menu, select "Personal Hotspot." If you don't see this option immediately, try searching for "Personal Hotspot" in Settings. In some versions of iOS, this section is located in the main Settings menu.
In the menu, toggle the "Allow others to connect" switch. The system may prompt you to turn on Bluetooth and Wi-Fi; if they're off, agree to this. This window displays your device's name, which will be visible to other devices when searching for networks, and the password for connecting.
☑️ Pre-launch check
Pay attention to the "Wi-Fi Password" field. By default, the system generates a random character set, but you can change it to something easier to remember. Use a combination of letters and numbers to prevent unauthorized access to your internet connection.
Connecting a second iPhone via Wi-Fi
This is the most popular and convenient method, requiring no additional wires. It allows you to connect multiple devices to the network simultaneously, creating a local coverage area. Data transfer speeds in this mode are maximum and are limited only by the capabilities of the cellular network and the Wi-Fi standard of the modules.
On the second iPhone that needs internet access, open "Settings" and go to "Wi-Fi." Wait for the scan for available networks to complete. A network with the name you saw in the Personal Hotspot settings on the first phone should appear in the list.
Click on the network name and enter the password set on the sharing device. After successful authorization, an icon of two linked rings will appear in the status bar, indicating an active connection to the access point. All traffic from the second device will now be routed through the SIM card of the first.
| Parameter | Description | Recommendation |
|---|---|---|
| Frequency range | 2.4 GHz or 5 GHz | Use 5GHz for speed, 2.4GHz for range |
| Security | WPA2/WPA3 | Be sure to set a password |
| Max devices | Up to 5-7 clients | Don't connect too many gadgets |
| Battery consumption | High | Keep the host on charge during long-term operation |
Why is the network not visible?
If the second iPhone doesn't see the first one's network, make sure Bluetooth is enabled on both devices. In the Apple ecosystem, this is necessary for initial discovery and handshake between devices via AirDrop and Continuity, even if the data transfer is over Wi-Fi.
It's worth noting that connecting via Wi-Fi significantly increases battery consumption on the source device. The radio module operates in constant signal transmission mode, which causes the device's casing to heat up. It is critically important not to cover a phone in modem mode with a blanket or pillow to avoid overheating.
Alternative methods: USB and Bluetooth
A wireless connection isn't always the best solution. In some cases, a cable connection or Bluetooth is preferable. These methods offer advantages, such as a stable connection, the ability to charge the device, or lower power consumption.
Connecting via a USB cable (Lightning or USB-C) provides the most stable connection without data packet loss. This is ideal for working with large files or video streaming. Furthermore, in this mode, the iPhone receiving the internet connection will simultaneously charge from the source device (if the host device is connected to a power bank or wall outlet).
To connect via USB, connect both phones with a cable. The receiving device may ask "Trust this computer?"—select "Trust." The source device's Personal Hotspot settings will show information about the connected USB client. Computers (Mac or PC) will see the iPhone as a network card.
⚠️ Attention: When connecting via USB, use only original cables. Apple or certified equivalents (MFi). Cheap cables can only transmit power, not data, making network setup impossible.
Bluetooth is a compromise. Data transfer rates are significantly slower than Wi-Fi or USB, often no higher than 1-2 Mbps. However, this method consumes the least amount of power. To pair, you need to pair the devices through the Bluetooth menu in Settings and enter a verification code.
Solution and connection errors
Even if you follow all the instructions, technical difficulties may arise. Users often encounter situations where the devices "see" each other, but the connection fails, or the internet doesn't work after successful pairing. In most cases, the problem can be resolved with simple steps.
The first thing to do is reboot both devices. This clears the network settings cache and resets frozen services. Toggle Airplane Mode on and off: turn it on for 10 seconds on both phones, then turn it off. This will force the devices to re-register with the carrier's cellular network.
If the issue persists, check your date and time settings. Inconsistencies in the time settings on your devices can cause security certificate errors and connection blockages. Make sure the "Automatic" option is selected under "General" -> "Date & Time."
In rare cases, telecom operators block the ability to share data, especially on older unlimited plans. In this case, you may need to change the value. APN (Access point). To do this, you need to manually enter the parameters recommended by your operator for modem mode in your cellular settings.
Security and traffic savings
By using your iPhone as a router, you become the administrator of your own mini-network. Security is entirely your responsibility. An open network without a password allows anyone to connect to your internet and potentially access unencrypted data.
Always use encryption WPA2 Personal or WPA3, which is the default system password. Don't share your password in plaintext via messenger unless you're confident in the recipient's communication channel's security. It's best to dictate it verbally or show it as a QR code, if your device allows it.
Monitor the number of connected clients. The "Tethering" menu displays a list of connected devices. If you see an unfamiliar device there, change your password immediately and disable tethering. This will protect you from data theft and potential attacks.
⚠️ Attention: Settings interfaces and menu item names may differ slightly depending on the version. iOS (e.g. iOS 16 vs. iOS 17) and carrier regional settings. If you can't find the item you need, use the search in Settings.
Frequently Asked Questions (FAQ)
Is it possible to connect an iPhone to another iPhone's Wi-Fi without a password?
Yes, as long as both devices are owned by the same Apple ID and Family Sharing is enabled, or the devices are in each other's contacts. When attempting to connect, a notification will appear on the sharing device's screen asking to confirm the connection; you won't need to enter a password.
Why is the status bar blue when the modem is turned on?
A blue time indicator or "notch" indicates that Personal Hotspot is active and at least one device is connected to your iPhone. This is a visual cue that your phone is currently sharing internet and draining battery power.
Does Wi-Fi sharing affect the iPhone's mobile internet speed?
Yes, it does. The bandwidth is divided among all connected clients. If multiple devices connect to your hotspot and start downloading large files, the speed on the primary device may drop significantly, and ping in games may increase.
How do I know who is connected to my iPhone?
Go to "Settings" -> "Cellular" -> "Tethering & Personal Hotspot." At the top of the screen, next to the "Allow Others" switch, you'll see the number of connections (e.g., "1 Connection"). Tapping this will display a list of devices.
Does tethering work if my iPhone is jailbroken?
Typically, yes, standard iOS features are retained. However, some tweaks or system modifications may conflict with network settings. If standard methods fail to enable Personal Hotspot, check any installed network-related tweaks or try resetting your network settings.