It's quite common to need to urgently transfer all the information from an old smartphone to a new one, but you don't have a computer or access to your home Wi-Fi network. This can happen while traveling, in an office with limited internet access, or simply when your router breaks down. Fortunately, the ecosystem Apple provides a powerful built-in tool that allows you to migrate data directly between devices.
The main method we'll discuss uses direct wireless connection technology, creating a temporary secure network between the two devices. This process doesn't require an external router, as one device acts as an access point, and the other connects to it. It's important to understand that for the process to be successful, both smartphones must be charged and in close proximity.
In this article, we'll detail the process, explore potential pitfalls, and answer frequently asked questions. You'll learn how to properly prepare iOS devices, why transfers might be interrupted, and what to do if the process gets stuck at the time estimation stage. We'll also discuss alternatives for cases where the standard approach fails for some reason.
How Quick Start Technology Works
Function Quick StartIntroduced in iOS 11 and significantly improved in later versions, Bluetooth is used for the initial handshake and the high-speed Wi-Fi Direct protocol for file transfer. When you bring a new iPhone close to your old one, the Bluetooth modules detect each other and initiate an encrypted communication channel. Therefore, an external router or mobile data connection is not required.
Once connected, the devices create a local network, often exceeding the speed of standard home Wi-Fi, especially if using 802.11ac or later. This allows for high-speed transfer of gigabytes of photos, videos, and applications. It is critical that Wi-Fi network passwords saved on the old device will also be transferred, but only after the main migration is complete and network access is restored.
The process is fully automated, but the user must monitor several key steps. The system automatically determines the volume of data to be transferred and suggests the optimal scenario. Please note that device screens may heat up during operation, which is a normal physical process when radio modules are actively operating.
⚠️ Attention: Do not disconnect the devices or turn off the screens until the process is complete. Disconnecting during the data copying process may require you to start the process over again, as your progress will not be saved.
Why is the transmission slow?
If you notice a drop in data copy speed, check if there are any heavy apps running in the background. Speed may also decrease when the device's casing gets very hot, as the system throttles the radio modules to protect components.
Preparing devices for migration
Before you begin, make sure both devices are ready to use. Your old iPhone must be unlocked and have Bluetooth enabled. Your new device, if previously used, will need to be reset to factory settings, as Quick Start only works during the initial setup (the "Hello" screen).
Make sure both devices are running the latest version of the operating system. While Apple strives to maintain backward compatibility, migrating data from a very old version of iOS to a newer one may cause errors or incorrect display of some settings. Check the battery charge: it is recommended to have at least 50% charge on each device or keep them connected to a power source.
It's also a good idea to free up space on the new device, although this is currently done automatically during setup. If you plan to manually transfer data later, ensure that the amount of free space on the target device exceeds the amount of data on the source.
- 🔋 Charge both smartphones to at least 60% or connect them to a charger.
- 📶 Turn on Bluetooth and make sure it is active on both devices.
- 🔄 Make sure your old iPhone has at least the iOS version required for your new device.
- 📱 Unlock your old iPhone and make sure you know your Apple ID password.
Step-by-step instructions: Quick Start method
Start by turning on your new iPhone and placing it next to your unlocked old iPhone. A "Setting up a new iPhone" system notification will appear on your old device's screen, prompting you to use your Apple ID. Tap the button Continueto start the pairing process.
An animation of floating particles will appear on the new device's screen. Point your old iPhone's camera at this animation to scan the unique code. If the camera doesn't respond, you can select "Manual Authentication" and enter the code displayed on the screen into the appropriate field. Once paired, the devices will establish a direct connection.
Next, follow the on-screen instructions: enter your old device's lock password on the new one, set up Face ID or Touch ID. When the system prompts you for a data transfer method, select Transfer from iPhoneDon't select the "Download from iCloud" option if you don't have fast Wi-Fi, as it will require internet access.
☑️ Pre-launch checklist
After confirmation, the "Time Estimation" stage will begin. During this time, the devices exchange service data. Do not interrupt the process, even if it appears to be frozen. The time may be displayed incorrectly for the first few minutes, but will then stabilize. The screens may go dark during the copying process, but the devices must remain close together.
Alternative methods without using a PC
If for some reason the standard Quick Start procedure doesn't work, you can use other methods that also don't require a computer. One option is to create a backup directly on the device if there's enough free space on the old iPhone, but this method is complex and requires manipulating the file system, which isn't always convenient.
A more realistic option is to use cloud storage, but with a caveat. If you have access to mobile data (4G/5G) and a large data plan, you can upload the data to iCloud or another service and then download it on a new device. However, this isn't technically an "offline" solution, as data is consumed through your cellular network.
There are also third-party apps for transferring files over a local network, such as SHAREit or Send Anywhere. They work similarly to Wi-Fi Direct, creating their own network between devices. However, these apps only transfer media files and documents, not system settings, passwords, or app data.
| Method | Do you need internet? | What does it carry? | Speed |
|---|---|---|---|
| Quick Start | No | Complete copy of the system | High |
| iCloud (backup) | Yes (Wi-Fi or 4G) | Complete copy of the system | Depends on the network |
| Third-party apps | No | Only files (photos, videos) | Average |
| AirDrop | No | Selective files | High |
Solving common problems
One common issue is the message "Failed to complete the transfer." This can be caused by an unstable Bluetooth connection during the initial setup. In this case, it's recommended to turn off Bluetooth on both devices, wait a few seconds, turn it back on, and then try pairing again.
Another common situation is that the devices don't see each other. Make sure Do Not Disturb or Sleep mode isn't enabled on your old iPhone, as these can block searches. Also, make sure both devices are using the same Apple ID to sign in to iCloud. While this isn't always strictly necessary for the transfer process, it does make it easier to log in.
If the process is running, but extremely slowly, check if there are any resource-intensive tasks running in the background. Sometimes, temporarily disabling geolocation or reducing screen brightness to reduce heat generation and prioritize the radio modules can help.
⚠️ Attention: If one of the devices loses battery power during the transfer, the data won't be lost, but the process will have to be restarted. The data on the old device remains intact until the transfer is complete.
What to do after the transfer is complete
Once the progress bar reaches 100% and the devices reboot, don't rush to delete data from your old phone. First, check that all photos, contacts, and messages are still on your new device. Some apps may require you to sign in to your accounts again, as your access keys may not have transferred for security reasons.
Be sure to wait for photos and files to finish indexing in the background. During the first few hours of use, your new iPhone may run slower than usual and get hotter—this is normal, as the system iOS Conducts database optimization and rebuilds search indexes.
Only after ensuring the new device is fully functional and all data is safe can you begin wiping your old smartphone. We recommend performing a full reset of your old iPhone using the menu. Settings → General → Transfer or reset iPhone → Erase all content and settingsto ensure that personal information is removed before sale or disposal.
Is it possible to interrupt the data transfer and continue later?
Unfortunately, the standard Quick Start mechanism doesn't support pause and resume. If the process is interrupted at any stage, it will have to be restarted from the beginning. Therefore, it's important to ensure a stable power supply and a clear path to interference.
Will website passwords saved in Safari be transferred?
Yes, as long as iCloud Keychain sync is enabled on both devices. When setting up a new device via Quick Start, passwords will be automatically updated once the internet connection is established, even if the data transfer was not performed.
Do I need to update iOS before transferring?
This is recommended, but not required. If the new device has an older iOS version than the old one, the system will prompt you to update the software during setup. However, having the latest version reduces the risk of backup compatibility.
What to do if you don't have enough space on your new iPhone?
The system will warn you about this before copying. In this case, you'll need to either free up space on your old device by deleting unnecessary videos and apps, or choose to manually install apps selectively after the basic setup.