Modern smartphones require regular operating system updates to ensure data security and proper app operation. However, users often encounter situations where the home network is unavailable, the signal is weak, or the router is unstable. In such cases, a logical question arises: is it possible to upgrade the system using only the device's resources or alternative connection methods.
Technically, Apple allows the installation of new versions iOS Various methods are available, and the lack of a wireless access point isn't a critical obstacle. It's important to understand that the process is divided into two stages: downloading the firmware file and the actual installation. While the first stage can be accomplished via a cellular network (under certain conditions) or an external drive, the second always occurs locally on the device.
In this article, we'll detail all the legitimate methods for installing updates without Wi-Fi, discussing mobile operator restrictions and technical nuances rarely covered in official manuals. You'll learn how to save data, avoid download errors, and properly prepare your device for the update process.
Using mobile internet for downloading
Since version iOS 12Apple has introduced the ability to download updates over a cellular network. Previously, this was strictly prohibited, requiring a Wi-Fi connection. Now, if you have a high-data plan or unlimited data, you can initiate the process directly from the settings menu. However, there's a catch: the file can be several gigabytes in size, which will significantly impact your balance.
To activate this feature, you need to go to Settings → Cellular and scroll down to the item Using cellular communicationsThere, you need to find the "Software Update" option and toggle the switch to active. Without this action, the system will ignore mobile data when attempting to download the update.
⚠️ Important: Before enabling LTE/5G downloads, make sure your data plan allows for this amount of data. The update file can be anywhere from 2 to 6 GB, which can result in significant data charges if you have a metered data plan.
It's worth noting that download speed directly depends on the coverage in your area. If the signal is unstable, the download may be interrupted, and you'll have to start over. Unlike Wi-Fi, a mobile network is more sensitive to movement and interference.
Updating via a computer using iTunes and Finder
The most reliable and traditional method, which doesn't require Wi-Fi on the phone itself, is using a personal computer. This method is ideal if your mobile internet is slow or limited and there's no wireless network nearby. The computer takes care of downloading the heavy firmware file, reducing the load on the smartphone.
For owners of Windows or macOS versions prior to Catalina, you will need the program iTunesNew Mac users use the built-in FinderThe process begins by connecting the device with a cable. It's important to use an original or certified cable, as cheap alternatives may not provide stable data transfer, which will result in an update error.
Once connected and trusted, select your device in the program interface. An "Update" button will be available in the "Overview" section. Clicking it will automatically download and install the latest version of the software. All traffic goes through the computer's internet connection, which can be via Ethernet or any other available connection.
- 📱 Connect your iPhone to your PC or Mac using a cable.
- 💻 Launch iTunes (Windows/old macOS) or Finder (new macOS).
- 🔄 Click "Update" and wait for the process to complete.
The main advantage of this method is stability. A cable connection is much more reliable than a wireless one, minimizing the risk of critical errors while writing system files. Furthermore, the computer's battery doesn't drain during the process, unlike a phone's battery when using a mobile hotspot.
☑️ Preparing for the update via PC
Creating a mobile hotspot
If you have a second smartphone with unlimited data or a high-speed data plan, you can turn it into a router. This feature is called "Tethering" or "Personal Hotspot." In this case, your iPhone will think it's connected to a regular Wi-Fi network, even though the internet source is actually the other device.
To use this method, take a second phone, turn on its data connection, and activate tethering mode. Then, on the device you want to update, find the created network in the Wi-Fi list and connect to it. The password is usually listed on the screen of the device sharing the connection.
This approach allows you to bypass restrictions if the primary device with the SIM card has poor network reception, but you can connect an external antenna or move the second phone to a location with a better signal. However, be aware of heat: Wi-Fi sharing generates significant heat on the secondary device, so it's best to remove its case.
⚠️ Note: When using tethering mode, the battery of the device drains very quickly. We recommend keeping it connected to a charger or power bank during the entire update process.
Solving problems with insufficient storage on your device
A common reason for an inability to update is a simple lack of available memory. The system requires space not only for the update file itself, but also for unpacking it and temporary files. If every megabyte counts, the standard OTA (over-the-air) updater may fail to launch.
In this case, the computer method becomes a lifesaver. When updating via iTunes or Finder, temporary files are created on the computer's hard drive, not the phone's memory. This allows you to install the new iOS even if your iPhone only has 1-2 GB of free space, whereas an over-the-air update might require 5-6 GB.
If you must update without a PC, you'll need to free up space manually. Uninstall heavy apps that can be easily redownloaded, clear your messaging app cache, or temporarily transfer photos and videos to the cloud or your computer. After the system is successfully installed, temporary files will be deleted, freeing up space.
Why hasn't the space been freed up after the update?
Sometimes after installing a new iOS, the system re-indexes files and analyzes the media library. During the first hours or even days after the upgrade, your device may run slower, and the memory may be displayed incorrectly. Give your phone some time (usually overnight while connected to a charger) to complete background processes.
Comparison of update methods: characteristics table
To help you choose the best option, we've prepared a comparison chart. It will help you weigh the pros and cons of each method based on your specific situation and technical environment.
| Parameter | Mobile Internet (LTE/5G) | Via computer (iTunes/Finder) | Modem mode (Hotspot) |
|---|---|---|---|
| Connection stability | Average (depending on the tower) | High (cable) | Medium/Low |
| Phone battery consumption | High | Minimum | High (on both devices) |
| Memory requirements | A lot of free space is needed | Minimum requirements | A lot of free space is needed |
| Download speed | Depends on the tariff and coverage | Depends on the PC and cable | Depends on 4G/5G speed |
As the table shows, updating via a computer remains the most universal and secure solution, especially for older iPhone models, which can be slow when handling large amounts of data over a wireless network. A direct connection eliminates radio interference and packet loss.
Common errors and how to fix them
Even if you follow all the instructions, errors may still occur. Users often see the message "Unable to verify update" or the process gets stuck at the "Evaluating update" stage. This may be due to temporary issues with Apple's servers or problems with the device's network stack.
The first thing you should do is reboot your smartphone. This clears the temporary network cache and resets frozen processes. If the problem persists, try turning Airplane Mode on and off for 10 seconds. This will force the device to reconnect to the cellular network's base station.
Sometimes resetting network settings helps. Go to Settings → General → Transfer or reset iPhone → Reset → Reset Network SettingsPlease note: This will delete saved Wi-Fi passwords but will not affect your personal data, photos, or apps. After rebooting, try updating again.
- 🔄 Please restart your device before trying again.
- ✈️ Use airplane mode to reset the communication module.
- ⚙️ Reset your network settings if the error persists.
If all else fails, and the error occurs specifically when downloading over a mobile network, your carrier is likely blocking or restricting traffic on the ports used by Apple. In this case, switching to the computer method is the only viable solution.
⚠️ Note: Settings interfaces and menu item names may vary slightly depending on your iOS version and iPhone model. If you can't find the item you're looking for, use the Settings search (top bar in the Settings menu).
FAQ: Frequently Asked Questions
Is it possible to update an iPhone if there is no space on either the phone or the computer?
Unfortunately, no. The firmware files need to be stored temporarily somewhere. If your computer is also critically low on space, try cleaning the disk or using a different PC. The update won't start on an iPhone without free space, as the system needs space to unpack the archives.
How long does it take to update without Wi-Fi?
The download time depends on your internet connection speed. On a fast 4G/5G connection, downloading 3GB will take 5-10 minutes. On a slow EDGE or 3G connection, the process can take an hour or more. The installation itself (the Apple screen with the progress bar) usually takes 5-15 minutes, regardless of the download method.
Will my data be lost when I update via iTunes?
No, selecting the "Update" button will save your data. However, there is always a minimal risk of failure. Therefore, we strongly recommend creating a backup before performing any system manipulation, even if you're not updating over Wi-Fi.
Why is the refresh button greyed out or inactive?
This could be due to several reasons: the device is already on the latest version, Apple's servers are temporarily unavailable, or the beta testing profile conflicts with the official version. Also, check the date and time—incorrect time settings block the connection to the update server.