Taking precautions before your phone is stolen transforms a potential digital catastrophe into a manageable hardware loss. Because smartphones act as the master keys to your identity—housing banking apps, personal data, and the two-factor authentication codes needed to access your accounts—an unprotected device leaves you highly vulnerable to rapid exploitation and permanent lockouts. Setting up biometrics, securing your SIM card, and saving backup codes ahead of time completely neutralizes a thief's access. This preparation ensures that while you might lose a piece of expensive hardware, your digital life and private information remain securely under your control.
DO BEFORE YOUR PHONE IS STOLEN:
Enable Find My iPhone setting on your phone.
Make sure you know your Apple Account email and password by heart. If your phone is stolen, you can log into iCloud.com/find from any browser instantly without needing a verification code. However, keep a second device (like an iPad or Mac) or an Account Recovery Contact set up so you can safely log into the rest of your Apple Account later to access your data.
Make a note of your mobile carrier's support telephone number (e.g.. Vodafone, O2 etc.) and your own mobile telephone number.
https://www.ofcom.org.uk/phones-and-broadband/mobile-phones/lost-or-stolen-phone
Make a note of your phones IMEI number (Dial *#06# to find it)
Enable all Stolen Device Protection settings on your phone. Note: If a thief knows your PIN, this enforces a 1-hour security delay before they can alter your account passwords away from familiar locations.
Set up an Account Recovery Contact.
Optional: If you are an advanced user, you can set up a Recovery Key, but be warned: doing so completely disables Apple's automated account recovery helper.
If you have a Google account, get your 10 backup codes so that you can recover your account if needed. Print them out and keep them VERY safe.
If you have an external password manager (e.g.1Password, LastPass etc.), then ensure you are able to login to it without access to your phone.
Never reveal your phone passcode (PIN). Be aware of your surroundings; thieves often shoulder-surf (watch you type your PIN) in public spaces before snatching the physical phone.
IF YOUR PHONE IS STOLEN, ACT IMMEDIATELY AS FOLLOWS:
Log into iCloud.com/find immediately (within an hour) on a computer or friend's phone.
Mark the iPhone as Lost to lock it remotely and track its location.
Call mobile carrier to report the theft and block the SIM card.
Inform your bank and credit/debit card suppliers.
File a report with the police.
File a theft and loss claim if covered by AppleCare+ or insurance.
Change passwords for important accounts (email, banking, social media).
Do NOT remove the stolen device from your Apple Account (iCloud settings). Keep it on your account so that Activation Lock remains active, rendering the phone useless to the thief. Removing it may also void an AppleCare+ Theft and Loss claim.
IF YOU LOSE CONTROL OF YOUR APPLE ACCOUNT:
If the thief gains control of your Apple account, it might be possible for you to recover it.
To recover your Apple Account and regain access to your iCloud account after your iPhone has been stolen, your best starting point is the Apple Account Recovery service. On a trusted computer, secondary Apple device, or via the Apple Support app on a friend's device, navigate to iforgot.apple.com and enter your Apple ID email address. Because your primary device is missing, choose the option to verify your identity using a secondary trusted phone number, an alternative recovery email, or a pre-assigned Account Recovery Contact. If you lack access to any of these, you can initiate Account Recovery, a automated safety process that takes a few days to verify your identity. Furthermore, if you activate a replacement SIM card with your original phone number from your network provider, you can seamlessly receive the necessary SMS verification codes to expedite the process and securely lock down your stolen device via Find My.
DO BEFORE YOUR PHONE IS STOLEN:
Turn on Theft Protections: Open your Settings app, tap the search bar at the top, and search for "Theft Protection". Turn on Theft Detection Lock, Offline Device Lock, and Remote Lock.
(Note: If you prefer to browse to it manually, it is typically located under Settings > Security & Privacy > Theft Protection or Settings > Security and Privacy > Lost device protection depending on your phone's brand).
Make sure you know your Google Account email and password by heart. If you need to log into android.com/find from a friend's phone or computer, use the "Sign in as guest" option. Keep your 8-digit backup codes or your Recovery Contact's details handy in case Google asks for a 2-Step Verification code that you can no longer receive on your stolen phone.
Make a note of your mobile carrier's support telephone number (e.g.. Vodafone, O2 etc.) and your own mobile telephone number.
https://www.ofcom.org.uk/phones-and-broadband/mobile-phones/lost-or-stolen-phone
Make a note of your phones IMEI number (Dial *#06# to find it)
Setup a Recovery Contact for your Google account.
Get your 10 backup codes so that you can recover your account if needed. Print them out and keep them VERY safe.
If you have an external password manager (e.g.1Password, LastPass etc.), then ensure you are able to login to it without access to your phone.
Never reveal your phone passcode (PIN). Be aware of your surroundings; thieves often shoulder-surf (watch you type your PIN) in public spaces before snatching the physical phone.
IF YOUR PHONE IS STOLEN, ACT IMMEDIATELY AS FOLLOWS:
Log into android.com/find (Google Find Hub) immediately on a computer or a friend's phone.
Mark the Device as Lost to lock the screen, disable Google Wallet, and display a contact message.
Use "Remote Lock" at android.com/lock using just your phone number if you can't log in.
Call your mobile carrier to report the handset stolen and block the SIM/eSIM.
Inform your bank and credit/debit card suppliers.
File a report with the police.
Change your Google Account password if you suspect your PIN was compromised.
Change passwords for important accounts (email, banking, social media).
Do not sign out of your Google Account remotely via the security dashboard until you have completely given up on tracking or recovering the handset. Signing out instantly disables your ability to locate or remotely wipe the phone
IF YOU LOSE CONTROL OF YOUR GOOGLE ACCOUNT:
If the thief gains control of your Google account it might be possible to recover it.
Recovering a Google account after your phone has been stolen requires bypassing the missing device to prove your identity. Start by navigating to the Google Account Recovery page (accounts.google.com/signin/recovery) using a trusted computer, tablet, or secondary device that you have frequently used to log in before, ideally from a familiar Wi-Fi network like your home. When prompted for 2-step verification or a mobile prompt, select "Try another way" to utilize alternative backup methods, such as entering a pre-downloaded 8-digit backup code, verifying via a designated recovery email address, or using a trusted recovery contact. If your mobile number was your only recovery option, contact your carrier immediately to freeze the stolen SIM card and issue a replacement; once activated in a temporary phone, you may be able to receive the necessary SMS verification code to successfully regain account access. (Note: Google sometimes places a security hold on newly issued SIM cards for up to 7 days, making your pre-printed backup codes or Recovery Contacts your fastest option)