Situations where landline internet is unavailable or unstable occur quite frequently. In such situations, Apple smartphone owners can use their devices as a hotspot, converting their mobile 4G or 5G connection into a fully-fledged Wi-Fi signal for other devices. This allows you to connect tablets, laptops, and even other smartphones, including iOS devices, to the network.
The process of setting up a wireless network between two Apple devices is characterized by fast setup and a stable connection. However, despite the simple interface, users often encounter network visibility issues or low data transfer speeds. Understanding the technical nuances of the operation modem mode will help you avoid common mistakes.
In this guide, we'll walk you through every step of the setup process, starting with verifying your carrier's data plan. You'll learn how to properly configure security settings and which hidden settings can affect data sharing in iOS.
Checking tariff terms and preparing the device
The first step before activating the internet tethering feature is to carefully check the terms of your mobile plan. Many carriers separate the terms "smartphone traffic" and "tethering traffic," setting separate limits or completely blocking the device from using it as a router. If this feature isn't paid for or is limited, connecting to the hotspot may not work or may be billed separately.
You need to make sure that your account balance has sufficient funds and that your tariff plan supports 4G or 5G networks. Without active mobile Internet The hotspot feature will be disabled in the system settings. It's also worth checking whether your daily or monthly high-speed data limit has been reached.
β οΈ Note: Some carriers may automatically detect tethering and block it or reduce speed to a minimum if it's not included in your service plan. We recommend checking with your carrier in advance.
Make sure your iPhone is running the latest version of iOS. Apple regularly releases updates that contain fixes for network modules and improve compatibility with various receiving device models. Older versions of the software may not work correctly with new encryption protocols.
For stable tethering, it's also important to have a strong cellular signal. In areas with poor reception, such as basements or locations far from towers, upload speeds will be low and the connection may be subject to frequent interruptions. Moving to an area with better reception often resolves poor performance.
Activating Personal Hotspot on iPhone
Once you've verified you have an active internet connection, you can begin setting up the device itself. The activation process takes just a few seconds and doesn't require any third-party software. All the necessary tools are already built into the operating system.
To begin, open the default application Settings on your smartphone's home screen. In the left menu column, usually in the second or third group of items, you need to find the section Modem modeOn some versions of iOS, this option may be hidden inside the Cellular or General menu if it hasn't been configured previously.
Once in the sharing menu, toggle the "Allow Others" switch to the on position. The system may ask you to confirm this action or prompt you to select a connection method. To wirelessly share data between iPhones, ensure the green status light is on.
The same screen also displays the name of your network, which by default matches the name of the device (for example, User's iPhone), and the current password for connection. This is the data the second phone will need to access the network. You can change the device name in the section Basics β About this device, if you want the access point to be named differently.
βοΈ Preparing the access point
Setting up network security and password
The security of the local network you create is critically important, as unauthorized individuals can access transmitted data through your access point. By default, iOS uses the modern WPA2/WPA3 encryption protocol, which provides reliable protection of transmitted traffic from interception.
The automatically generated password is typically 8 or more random characters. It can be changed to something easier to remember, but it's recommended to keep it complex, including mixed-case letters and numbers. To change the password, click the corresponding field in the modem menu and enter the new combination.
There's an important feature when working with Apple devices managed by the same iCloud account. If both iPhones are registered to the same Apple ID and Bluetooth is enabled, the second phone can connect to the first's hotspot without entering a password. This feature, known as Instant Hotspot, simplifies interaction, but requires compliance with synchronization conditions.
β οΈ Warning: Never set simple passwords like "12345678" or your date of birth. This makes your network vulnerable to automated password guessing by neighbors or intruders in public places.
You can also enable or disable the "Maximum Compatibility" option in the settings menu. Enabling this option switches the frequency range from 5 GHz to 2.4 GHz. This may be necessary if the receiving device is an older model and doesn't see the network in the faster band, but it will reduce data transfer speeds.
Connecting a second iPhone to the created network
After successfully activating the hotspot on the first device, you need to connect to it on the second iPhone. The search and connection process is completely standardized and similar to connecting to any other Wi-Fi network. The main thing is to ensure that the receiving device also has the wireless module enabled.
Open Wi-Fi settings on the second phone and wait for a list of available networks to appear. The list should show the name of your first iPhone, which you checked or changed earlier. If the device doesn't appear within 10-15 seconds, try refreshing the list by toggling the Wi-Fi switch off and then back on.
Click the network name. The system will prompt you for a password. Enter the character combination specified in the modem mode on the first device. Be careful with case, as the system distinguishes between uppercase and lowercase letters. Once entered, click "Connect" or "Join."
A successful connection will be confirmed by the appearance of the Wi-Fi icon in the status bar (at the top of the screen) and a distinctive sound signal. A blue or green bar indicating the number of connected clients will appear in the top status bar on the dispensing device. This indicates that communication channel installed and traffic is transmitted.
| Parameter | Default value | Recommended value | Impact on work |
|---|---|---|---|
| Frequency range | 5 GHz (automatic) | 5 GHz for speed, 2.4 GHz for compatibility | Signal speed and range |
| Encryption protocol | WPA2/WPA3 Personal | Leave unchanged | Data security |
| Network name (SSID) | iPhone (Username) | A unique name without special characters | Identification in the list of networks |
| Visibility | Hidden if there are no clients | Active when the mode is on | Detectability |
What to do if the password is not accepted?
If you're sure you're entering the correct password but the connection isn't working, try selecting "Forget this network" in the Wi-Fi settings on the receiving device. Then try entering the password again. Restarting the Wi-Fi module on both devices may also help.
Using Family Sharing for automation
For Apple ecosystem users, there's a convenient way to simplify the process of sharing internet with family members. Family Sharing allows you to automatically share a hotspot with the group organizer and other members without having to enter passwords each time.
To set this up, both iPhones must be part of the same family group via iCloud. In the first phone's settings, go to Modem mode and turn on the "Allow Family Members" switch. After this, devices in your family group will see the hotspot as a priority and connect to it automatically when needed.
This is especially useful when traveling, when you need to quickly share internet with children or spouses. The system will automatically notify the primary plan owner of the connection request if confirmation is required, or will allow the device to connect immediately if the appropriate permissions are enabled. This eliminates the need to dictate complex passwords in noisy places.
It's important to note that the data consumed by connected family members is deducted from the primary subscriber's shared data plan. Therefore, it's important to monitor your data usage, especially if your plan has restrictions or if your speed drops significantly after reaching the limit. You can monitor your data usage through widgets on your lock screen or in your operator's app.
Diagnosing problems and troubleshooting connection errors
Despite the streamlined processes in iOS, situations sometimes arise where the second iPhone doesn't see the first one's network or the connection fails without internet access. One common cause is a network service failure. In this case, restarting both devices helps, clearing temporary network module cache errors.
If the issue persists, check your APN (Access Point Name) settings in the cellular section. Sometimes these settings can become reset after updating iOS or changing your SIM card. The correct settings are usually sent automatically via SMS from your carrier, but you can also enter them manually by finding the latest information on your provider's website.
Another possible cause is that "Data Saver" or "Low Power Mode" is enabled on one of your devices. These features can limit background activity and network interfaces. Try temporarily disabling them to test the connection stability.
β οΈ Note: Settings interfaces and menu item names may vary slightly depending on the iOS version (15, 16, 17, and later). If you can't find an item, use the settings search (the magnifying glass at the top of the settings list).
In rare cases, the problem is caused by a conflict between IP addresses or DNS servers. In this case, you can try manually entering the DNS server on the receiving device, for example, from Google (8.8.8.8) or Cloudflare (1.1.1.1). To do this, go to the Wi-Fi settings, click the "i" icon next to the network name, and change the DNS configuration to "Manual."
Optimizing speed and power consumption
Sharing Wi-Fi is a power-hungry process that significantly drains your smartphone's battery. To minimize power consumption, try to keep both devices in close proximity. Moving further away from the access point forces the sharing phone to increase its transmitting power, which leads to heat buildup and rapid battery drain.
It's also worth keeping in mind that when actively using data sharing, your phone may become noticeably warm. This is a normal physical reaction of the processor and modem to high load. If the device warns of overheating, use of the camera and other heavy apps will be limited until it cools down.
To maximize data transfer speed, ensure that the sharing device is not running background downloads, app updates, or photo syncing to the cloud. These processes consume bandwidth and can significantly reduce internet speed on the connected iPhone.
Frequently Asked Questions (FAQ)
Is it possible to share Wi-Fi from iPhone to Android?
Yes, you can. The process for setting up a hotspot on an iPhone is the same regardless of which device you're connecting to. On an Android smartphone, simply find the iPhone's network name in the Wi-Fi list and enter the password. No special settings are required on the iPhone for this.
Why is the status bar blue when the modem is turned on?
A blue (or green in some iOS versions) bar at the top of the screen indicates that tethering is active and at least one client is connected to the hotspot. If no one is connected, the bar might be green or absent, depending on the OS version.
How many devices can connect to an iPhone at the same time?
Technically, the iPhone supports up to five simultaneous Wi-Fi connections. However, with a large number of connected devices, internet speeds may drop significantly and the device may become hotter.
Does Wi-Fi hotspot work if there is no SIM card on the iPhone?
No, a SIM card with an active data plan is required to share mobile data. Without a SIM card, the iPhone can only share the data it receives via Wi-Fi (the repeater feature), but this is difficult to do using standard iOS tools; jailbreaking or third-party utilities are usually required.
How do I change the access point name if it can't be changed in the main settings?
The access point name is taken from the device's common name. To change it, go to Settings β General β About β NameEnter a new name, and it will automatically be applied to Bluetooth, AirDrop, and Personal Hotspot.