New Device Security Setup: Phone, Laptop and Smart Home

Secure a new phone, laptop, or smart home device by updating its software, protecting its accounts, enabling strong sign-in and recovery options, and limiting unnecessary access. The exact menus differ by manufacturer, but the checklist below covers the essential steps and explains how to adapt them to each device.

Start with a trusted setup

Use a trusted network. Set up at home or on another network you trust. Avoid entering account passwords over public Wi-Fi during initial setup; if you must use it, use your phone’s cellular connection when available.
Get the device and apps from legitimate sources. Use the device maker’s normal setup process and official app store or support pages. For a smart home product, install its companion app from the app store rather than following an unfamiliar link or scanning a suspicious code.
Check the account and recovery details. Use an email address and phone number you control. Review recovery options carefully so a lost device does not leave you locked out.
Do not skip updates during setup. Install available operating-system and firmware updates before adding sensitive accounts or connecting smart devices to other equipment.

A factory reset is not always necessary for a device bought new from a reputable seller. If it arrives already configured, has an unknown account attached, or appears to have been used, do not trust it with personal information. Contact the seller or manufacturer for a safe resolution.

Lock down accounts and sign-in

Your device’s security depends heavily on the accounts connected to it: the phone’s platform account, the laptop’s user account, and the smart-home account. Secure the email account used for recovery as well, since access to it may allow someone to reset other passwords.

Use a long, unique password for each important account. A reputable password manager can help create and store different passwords; do not reuse your email password for a device account.
Turn on multifactor authentication (MFA) wherever it is offered. An authenticator app, security key, or passkey can provide stronger protection than a password alone. Keep recovery codes somewhere separate from the device.
Set a screen lock. Use a strong passcode or password, and enable fingerprint or face unlock only as a convenient way to unlock the device—not as a replacement for its underlying passcode.
Set a short automatic screen-lock delay, and configure the device to require authentication after it locks. Avoid displaying sensitive message contents on the locked screen.
Review account sessions and trusted devices. Remove old devices you no longer own or recognize, and sign out of shared computers.

MFA does not make phishing impossible. Treat unexpected sign-in prompts, recovery messages, and requests to share a one-time code as suspicious. Do not approve an authentication request you did not initiate.

Update the operating system and apps

Updates fix defects and can address security weaknesses. Enable automatic operating-system updates and automatic app updates where practical, or set a regular reminder to check. Restart when an update requires it; an update that is downloaded but not installed may not provide its protection yet.

For a laptop, use the built-in update settings and install updates for the operating system, browser, and apps. Keep the browser current because it handles much of everyday browsing and online account use. On a phone, update both the system and apps from its normal settings and app store. On a smart-home device, check for firmware updates in the manufacturer’s app and enable automatic updates if the option is available.

Update support varies. Before relying on an older device for sensitive tasks, check whether its maker still supplies security updates. If support has ended, replacing it may be safer than assuming that antivirus software or a router can compensate for missing device fixes.

Set up protection for each device type

Phone: Turn on the built-in lost-device feature, which may let you locate, lock, or erase a missing phone. Check that backups are enabled and understand what they include. Review app permissions for location, microphone, camera, contacts, and photos; allow access only when it makes sense. Remove apps you do not use.
Laptop: Use a standard user account for everyday work rather than staying signed in as an administrator. Keep the built-in firewall and security protections enabled. Turn on full-disk encryption if supported, and store its recovery key securely—not only on the encrypted laptop. Back up important files to a separate location.
Smart home: Change any default or shared password, use MFA on the account, and give the device only the permissions it needs. Review who can control it and remove former household members or unused integrations. Disable remote access or features you do not need. Keep the device and its app updated.

Smart devices can collect information about routines, voices, rooms, or when people are home. Read the privacy settings, check whether recordings or activity histories are stored, and delete data or disable collection options you do not want when the product allows it. A device that no longer receives updates should be treated cautiously, especially if it remains connected to the internet.

Secure the home network and backups

Use the router’s current security settings, a unique administrator password, and a strong Wi-Fi password. Install router updates when available, and turn off remote administration or other features you do not use. A separate guest network can help keep visitors’ devices apart from your personal devices; some routers also provide a separate network for smart-home equipment. These options reduce exposure but do not replace device updates and account protection.

Backups help recover from theft, device failure, or accidental deletion, but they are not a substitute for security. Enable automatic backups for important phone and laptop data, check that they complete, and learn how to restore them. Protect the backup account with a unique password and MFA. Where possible, keep an additional copy that is not continuously connected to the device; malware or account compromise can otherwise affect accessible copies too.

Check privacy, sharing and recovery

Before using the device routinely, look through its privacy and sharing settings. Turn off unnecessary location history, advertising personalization, voice recording, or diagnostic sharing when those options are offered. The names and availability of these controls vary, so check the device’s settings and the service’s privacy controls rather than assuming a single switch governs everything.

Decide in advance what to do if the device is lost: know how to lock it remotely, revoke account sessions, contact your mobile provider if a phone is involved, and restore a backup. Keep recovery codes and encryption keys in a safe place separate from the device. Do not store the only copy of a recovery key in an account that the key itself is needed to access.

Common setup mistakes

Using one password everywhere: One exposed password can put multiple accounts at risk. Change reused passwords, starting with email and device accounts.
Assuming a fingerprint replaces a passcode: Biometrics are convenient, but the device still relies on a passcode or password for recovery and some sensitive actions.
Installing too many security apps: Prefer built-in protections and reputable software from official sources. Multiple tools can conflict, and a security app cannot make an unsupported device safe.
Leaving smart-home access shared: Review household users, voice assistants, and connected services. Remove access that is no longer needed.
Thinking a backup prevents account theft: Backups help restore data; they do not stop someone from signing in. Secure the account and verify recovery separately.

Frequently Asked Questions

Should I update a new device before using it?
Yes. Install available operating-system, app, and firmware updates during setup, then enable automatic updates where practical. This helps ensure you are not starting with fixes that have already been released but not installed.

Do I need antivirus software on a new phone or laptop?
Keep the device’s built-in security protections enabled. Whether additional security software is appropriate depends on the operating system and how you use the device; download it only from a trusted, official source and avoid claims that it can prevent every threat.

Is public Wi-Fi safe for setting up a device?
A trusted private network is preferable for initial setup and account sign-in. If public Wi-Fi is unavoidable, use a secure connection, avoid unexpected login pages and prompts, and use cellular data when available for sensitive setup tasks.

What should I do if a smart device has no update option?
Check the manufacturer’s official help information to confirm whether updates are available and whether the product remains supported. If support has ended, consider disconnecting it or replacing it rather than relying on it for sensitive functions.

How often should I review device security?
Check after major updates, when adding a new app or smart-home user, and periodically thereafter. Confirm that updates and backups are working, recovery details are current, and old accounts or permissions have been removed.

General steps for current mainstream versions; menus can differ by device and version. See the disclaimer or report an error.

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