The fastest way to transfer cellular data is through iCloud or your carrier's backup service

You have three practical routes to move your cellular data to a new iPhone: iCloud backup, which copies most of your data wirelessly; direct transfer, which moves data between two iPhones side by side; or your carrier's backup, which some carriers offer as an alternative. iCloud backup is the most common because it works whether your old phone still powers on or not, and you can start the transfer before your new phone arrives. Direct transfer is fastest if both phones are in front of you and fully charged. Your carrier's method varies by provider — AT&T, Verizon, and T-Mobile each run their own systems — so check with them if you want that route.

The data that transfers includes text messages, photos, contacts, calendar events, app data, and settings. What does not transfer: your SIM card information (your phone number and carrier account stay tied to your SIM), your Apple ID password (you enter it fresh on the new phone), and any data stored only on your carrier's network (like voicemail settings on some carriers). Cellular settings themselves — like which network bands your phone prefers — reset to factory defaults on the new phone, which is usually fine because the new phone will auto-detect the best settings.

Key Takeaways

  • iCloud backup works without your old phone present and can start before your new phone arrives, making it the most flexible option for most people.
  • Direct transfer between two iPhones is the fastest method if both phones are charged and in the same room, taking 30 minutes to a few hours depending on data size.
  • Your cellular plan and phone number stay with your SIM card, not your backup, so insert the correct SIM in your new phone before restoring data.
  • Text messages, photos, contacts, and app data all transfer, but your Apple ID password and carrier-specific settings do not.
  • If your old phone is broken or lost, iCloud backup is your only option — direct transfer requires both phones to be powered on.

Using iCloud backup to transfer your data

Start by backing up your old iPhone to iCloud while it is still in your hands. Open Settings, tap your name at the top, select iCloud, then tap iCloud Backup. Turn on iCloud Backup if it is off, then tap Back Up Now. The backup size depends on how many photos and apps you have — it can take anywhere from a few minutes to an hour on a home WiFi network. You need enough free iCloud storage; Apple gives you 5 GB free, and if you exceed that, you will need to buy more storage (50 GB, 200 GB, or 2 TB plans are available through Settings > [Your Name] > iCloud > Manage Storage).

When your new iPhone arrives, power it on and follow the setup screens. When you reach the "Apps & Data" screen, select "Restore from iCloud Backup." Sign in with the same Apple ID you used on your old phone, choose the most recent backup from the list, and let the phone download and restore your data. This can take 30 minutes to several hours depending on your internet speed and how much data you are restoring. Keep the phone plugged in and on WiFi during this time — do not unplug it or close the setup screens.

After restoration completes, your phone will restart and you will see your old home screen layout, apps, messages, and photos. Some apps may need to download their data in the background over the next few hours, so do not be alarmed if a few apps feel empty at first.

Direct transfer between two iPhones

If you have both iPhones in front of you and both are charged to at least 50%, direct transfer is faster than iCloud. Power on your new iPhone and hold it next to your old one. Your old phone will detect the new one and ask if you want to set it up. Tap "Continue" on the old phone, then hold your old phone's camera over the animation that appears on the new phone's screen. The phones will pair automatically — you do not need to type anything.

Next, you will be asked to enter your Apple ID password on the new phone. After that, the new phone will begin downloading your data directly from the old one. This transfer happens over a local WiFi connection between the two phones, so you do not need to be connected to your home network (though being connected can speed things up). The process typically takes 30 minutes to a few hours depending on how much data you have. Both phones must stay close to each other and remain powered on until the transfer finishes.

Once the transfer completes, your new phone will have your old phone's data, and you can set your old phone aside. If you plan to sell or recycle your old phone, you should erase it after confirming the transfer worked — go to Settings > General > Transfer or Reset > Erase All Content and Settings on the old phone.

What to do with your SIM card and carrier account

Your cellular plan and phone number are tied to your SIM card, not to your backup. Before you restore any data, insert the SIM card from your old phone into your new phone, or get a new SIM card from your carrier if your new phone uses a different SIM size (older iPhones use nano-SIM; newer ones use eSIM, which is digital). Your carrier can tell you which type your new phone needs.

If you are switching carriers or getting a new plan, contact your new carrier before you set up the new phone. They will either give you a new SIM card or activate an eSIM over the phone. Once the SIM is in place and activated, your phone number and cellular service will work immediately, even before you restore your backup.

Some carriers offer their own backup and restore services (AT&T has AT&T Mobile Backup, Verizon has Verizon Cloud, and T-Mobile has T-Mobile Backup). These work similarly to iCloud but store your data on the carrier's servers instead. If you used your carrier's backup on your old phone, you can restore from it on your new phone through the carrier's app or website. Most people find iCloud simpler because it is built into iOS and does not require a separate app.

If your old phone is broken or lost

If your old phone no longer powers on or you no longer have it, direct transfer is not an option. Use iCloud backup instead. As long as you remember your Apple ID and password, you can restore from your most recent iCloud backup on your new phone. The backup will be from whenever you last backed up — if you backed up regularly, it should be recent.

If you do not remember your Apple ID password, you can reset it on the Apple ID website (appleid.apple.com) using your recovery email or phone number. This process takes a few minutes and will let you sign in on your new phone.

If you never set up iCloud backup on your old phone, you will not have a backup to restore from. In this case, your new phone will start fresh with no previous data. You can still add your contacts back manually or by signing into apps like Gmail or Outlook, which sync your contacts automatically.

Troubleshooting common transfer problems

If your backup is stuck or taking too long, check your internet connection. iCloud backups need a stable WiFi connection; if your WiFi keeps dropping, move closer to your router or restart it. You can also check how much data is being backed up by going to Settings > [Your Name] > iCloud > Manage Storage on your old phone — if the backup is larger than your available iCloud storage, it will fail. Buy more storage or delete old backups from other devices to free up space.

If direct transfer fails partway through, both phones will ask if you want to try again. Make sure both phones are fully charged, close to each other, and not running other apps. Restart both phones and try again. If it fails a second time, fall back to iCloud backup instead.

If your new phone restores from backup but some apps are missing, those apps may have been deleted from the App Store or are no longer compatible with your new phone's iOS version. You can search for them manually in the App Store and reinstall them. Your app data (login information, saved games, settings) will restore automatically when you reinstall the app.

Frequently Asked Questions

Will my text messages transfer?

Yes. iCloud backup and direct transfer both copy all your text messages, including group chats and attachments. If you use iMessage (Apple's messaging service), those conversations transfer completely. SMS and MMS messages (standard text messages) also transfer. The only exception is if you deleted messages on your old phone before backing up — deleted messages cannot be recovered.

Do I need to back up before I sell my old phone?

You should back up before you erase your old phone, not before you sell it. After you have confirmed that your new phone has all your data and is working properly, go to Settings > General > Transfer or Reset > Erase All Content and Settings on the old phone. This erases everything and returns the phone to factory condition. Then you can safely sell or recycle it.

What if I want to keep some data on my old phone and not transfer it?

You cannot selectively choose which data transfers during backup — it is all or nothing. However, after your new phone finishes restoring, you can delete specific apps, photos, or messages from the new phone if you do not want them. Your old phone will not be affected.

Can I transfer data from an Android phone to an iPhone?

Not through iCloud or direct transfer — those methods only work between iPhones. Apple offers a separate app called "Move to iOS" that you can download on an Android phone to transfer contacts, photos, and some app data. The process is different from iPhone-to-iPhone transfer and works best if you set up your new iPhone as a new device rather than restoring from backup.

How much iCloud storage do I need?

That depends on how many photos, videos, and apps you have. Apple gives you 5 GB free, which is enough for contacts, messages, and settings but usually not for photos and videos. Check how much space your backup will take by going to Settings > [Your Name] > iCloud > Manage Storage > Backups on your old phone. If it exceeds 5 GB, you will need to buy a larger plan.