How to Prepare Your Phone in Case It Is Lost or Stolen
Switch on a few settings now and a lost phone can be found, locked and wiped later. Here is what to set up, and in what order.
To prepare your phone in case it is lost or stolen, do four things now: switch on the find-my feature, set a lock that holds up under pressure, limit what shows on the locked screen, and keep a backup. Each takes a few minutes. Together they turn a lost phone from a disaster into an annoying afternoon.
You cannot do any of this after the phone is gone. That is the whole point of doing it today.
Find-my and remote lock
Every major phone system has a built-in feature to find a lost phone. On an iPhone it is called Find My. On an Android phone it is called Find Hub or Find My Device, depending on the maker. The names change, so look in your phone's settings for "find" and your account name.
Check three things:
- The feature is on. Open the setting and make sure it says on.
- Location is allowed for it. If location is off, the phone cannot report where it is.
- You can reach it from another device. Sign in to the same account on a computer or a friend's phone and see if your phone appears on the map. Do this test once. If it fails, you want to learn that today and not on the worst day.
With this feature on, you can lock the phone from far away, show a message with a way to contact you, and erase it if you must. Many phones also stay locked to your account even after a reset, which makes a stolen phone much harder to resell.
A lock that holds under pressure
A phone lock is only as good as its weakest part. Choose a passcode of six digits or more, or a longer password. Avoid birth dates, repeated digits and simple lines such as 123456. Someone who knows you, or who watched you type it, can guess those.
Fingerprint and face unlock are fine for daily use. They are fast, and you will use them. But they sit on top of the passcode. Know that a stranger who watches you type your passcode in a train, then takes the phone, can open it. In public, shield the screen with your hand when you type it. If your phone offers a feature that asks for extra checks when you are away from familiar places, switch it on.
Also set the screen to lock after a short time, such as one minute or less. A phone that stays open for ten minutes on a table is a phone that is easy to use.
What a thief can see on the lock screen
A locked phone still shows things. Look at yours without unlocking it and ask what a stranger can see.
- Message previews. A bank code or a password reset code can appear on a locked screen. A thief who also has your email address can use that code. Set previews to show only after unlock.
- Control centre and quick panels. Some phones let you turn on airplane mode from the locked screen. That stops the phone from being found. Turn that off in the lock screen settings.
- Voice assistant. Check what it can do while locked. Reading your messages or calling contacts should need an unlock.
- Wallet and payment cards. Make sure a payment needs your face, fingerprint or passcode every time.
Also add a short note to the lock screen if the phone allows it, such as an alternative contact. An honest finder can then reach you. Do not put your home address on it.
Backups that let you walk away
If the phone is gone for good, you want to be able to say, "Fine, I will buy another," and carry on. That needs a backup.
Check that automatic backup is on, and that it finished. Most phones show the date of the last backup in settings. Photos and messages are what people miss most, so make sure those are included. Remember that the backup is only useful if you can sign in to the account that holds it. Keep your account recovery details up to date, and keep your recovery codes for important accounts somewhere that is not on the phone.
Here is an example. Say Esi leaves her phone in a taxi. She has had Find My switched on for two years. She opens her laptop and sees the phone on the map, moving. She marks it as lost and puts a message on the screen with her partner's number. She does not try to chase the taxi. Her passcode is long, so nobody can get into it, and her bank codes do not show on the lock screen. That evening she buys a cheap phone, signs in, and restores her backup. She loses a day, not her accounts.
What to do on the day
If your phone does go missing, act in this order: mark it as lost with the find feature, then sign out and change the passwords that matter, then call your mobile provider and your bank if needed. For a full walk-through, read lost your phone, what to do to protect your accounts. If the phone is a work phone, report it to your employer at once, because they may need to wipe it.
When this does not work
Nothing here helps if the phone is switched off, has no connection, or has been reset by a thief before you act. The find feature needs the phone to be online to show a location. This is why the lock and the backup matter even more: they work when the phone cannot be reached.
Some work phones are managed by the employer, who sets their own rules. If that is your case, follow your employer's procedure and do not remove management software to "fix" settings.
For the full picture across phone, laptop and home network, see the phone, laptop and home Wi-Fi security checklist. Two related pages help with the next steps: which app permissions you should deny and whether smart devices should go on guest Wi-Fi.
Learn this in five minutes
The track "Phones and Computers" covers choosing a secure screen lock, locking when you step away, preparing a device before it is lost or stolen, protecting shared devices, and erasing a device before reuse or resale. Each lesson takes about five minutes and ends with a short practice you can do on your own phone.