The new phone is out of the box on your kitchen table, still smelling like packaging. You signed in and opened Contacts. Forty-one names. You had more than four hundred. Your dentist is gone. The neighbor who feeds the cat is gone. Nothing was deleted, though. Those numbers are still on the old phone in the drawer — they just never belonged to the account you signed into, so they were never invited along. Ten minutes on that old phone, before you put it away, is the whole difference.
First, find out where your contacts actually live
Your contacts app shows one clean list. Behind it sit three storage places that look identical: your Google Account or iCloud, the phone’s own memory, and the SIM card. Only the account travels. Google says it plainly: contacts saved in device storage don’t sync anywhere, and if that device is lost or damaged, those contacts may be lost with it. Five minutes tells you how big your problem is.
On your Android phone:
- Open Contacts. At the bottom, tap Organize (older versions call this tab Fix & manage — Google renamed it, and its own help pages still disagree).
- Tap Manage SIM. Everything on that screen lives on the SIM card and only there.
- Go back, tap your Profile picture, then Select an account to see what each account holds.
- Anything in the main list that appears under no account is a device or SIM contact. That’s your loss column.
On your iPhone (names from iOS 26): open Settings → Apps → Contacts → Contacts Accounts. Every account — iCloud, Gmail, Exchange, Yahoo — is listed with its own Contacts switch. Then tap the lists button in Contacts, top left, to view one account at a time. Whatever appears under no account lives on that iPhone alone.
Faster still: open contacts.google.com or icloud.com/contacts on a computer. That list is the account, and only the account. Pick five names off your phone at random — your dentist, the cat neighbor, the plumber — and search for each one on that web page. Every name that isn’t there is a name that will vanish.
Fix it on the old phone, not the new one
Do this while the old phone still turns on. Contacts that were already in your Google Account have a 30-day safety net (below). Contacts that lived only on that phone or its SIM have none — once it’s wiped or traded in, they’re gone for good.
Android, all at once: open Settings → Google services and preferences → All services → Backup & restore → Google Contacts sync → Also sync device and SIM contacts, then turn on Sync device and SIM contacts automatically and pick your account. Some phones bury that screen elsewhere — type Google Contacts sync into the Settings search box instead. Google warns this backup depends on your phone’s make and model, so verify it.
iPhone: open Settings → your name → iCloud, tap See All next to Saved to iCloud, and switch on Contacts. Then set Settings → Apps → Contacts → Default Account so new numbers are born in the right place. Don’t worry about the free 5 GB — what fills iCloud is photos and backups, not your address book.
Now pick your route
| Your move | Fastest path |
|---|---|
| Android → Android | Same Google Account at setup |
| Android → iPhone | Move to iOS app, during setup only |
| iPhone → Android | QR code at setup, or Android Switch |
| Anything → anything | Export one .vcf file |
Android to Android. Sign into the same Google Account at setup and the contacts land on their own. If names are missing an hour later, go to Settings → Google → Set up & restore → Restore contacts, tap the phone you’re coming from, tap Restore, and wait for Contacts restored. One rule kills this quietly: both phones must be on the same Android version, or the new one later.
Android to iPhone. On the iPhone’s Quick Start screen, choose Set Up Without Another Device → Move Data from Android, then on Transfer Your Apps & Data pick From Android → Transfer with App. On the Android, open Move to iOS, tap Continue, then Agree. The iPhone shows a ten-digit or six-digit code; type it on the Android, tap Connect to join the temporary Wi-Fi network, check Contacts, then Continue. On a compatible version of Android 17 or later, Transfer without App skips all that for a QR code you scan with the Android’s camera. Apple doesn’t publish a device list — it tells you to ask your phone’s manufacturer whether yours supports transfer without the app. If Transfer without App isn’t on the screen in front of you, yours doesn’t; use Transfer with App.
iPhone to Android. On iOS 26.3 and later there’s a direct door: Settings → General → Transfer or Reset iPhone → Transfer to Android, then scan the QR code on the Android and pick your data. If the camera won’t read it, tap Other Options and type the session ID and pairing code instead. Otherwise connect the two with a cable, or use Google’s app (Android Switch, formerly Switch to Android), and tap Copy. Have both phones on and fully charged first. Then one final step decides whether your friends’ texts ever reach you again: on the iPhone, open Settings → Apps → Messages and switch iMessage off. Do it before the SIM leaves that phone.
The universal backup: one .vcf file. On an iPhone, open Contacts, tap the lists button, press and hold a list, and tap Export. From a computer, icloud.com/contacts → Select All Contacts → Export vCard. On Android: Contacts → Organize → Export to file → Export to .VCF file. Going back in, it’s Import from file, or Import at contacts.google.com, or Import Contact on iCloud.com. On an iPhone with no account, tapping a .vcf attachment in an email is the only documented way in.
The catch nobody tells you
Almost every “my contacts disappeared” story is the same: numbers that lived on the SIM card, never on the account. And a SIM is a far worse copy than you think. A standard SIM holds about 250 contacts, one number per person, and chops long names off after roughly the first dozen characters. “Maria Work Front Desk” comes back truncated, with no email, no photo, no second number. A SIM isn’t a backup. It’s a shrunken photocopy of one.
The iPhone side breaks the advice your son-in-law gave you. Apple states that your iPhone doesn’t store contacts on the SIM card. It reads a SIM; it never writes to one. So the classic trick — save everything to the SIM, pop it into the new phone — doesn’t exist on iOS, and there’s no export-to-SIM button to hunt for. After years on an iPhone, your SIM is probably empty or frozen with contacts from your last Android.
A 2026 wrinkle finishes that plan. Apple’s US spec sheets for iPhone 17 and iPhone Air say the phone uses advanced eSIM technology and is not compatible with physical SIM cards. No tray means no SIM to insert, and Import SIM Contacts will have nothing to import — check your model’s spec sheet before planning around one. And if your phone runs the manufacturer’s own contacts app, Samsung’s included, these menu names differ. On a Samsung, the same job is Contacts → the three-line menu → Manage contacts → Import or export contacts → Export, and Samsung steers whole-phone moves to Smart Switch.
If you already wiped the old phone, you still have a window. Deleted Google contacts sit in the trash for 30 days before they’re deleted permanently, and contacts.google.com → Settings → Undo changes reverses changes from the last 30 days. Past that, nothing comes back.
How to know it actually worked
Go get the old phone out of the drawer right now, while it still turns on. Run the Manage SIM check or the Contacts Accounts check, then export one .vcf file to your own email tonight. That attachment is the copy you’ll be glad you made.