How to get a second phone number without a second SIM card

A second phone number used to mean a second phone, a second contract and a second charger on the nightstand. The reasons for wanting one have not changed: you would rather not hand your personal number to every marketplace listing, delivery driver and sign-up form, or you need a local number in another country for family, banks and services that only call local lines.

What has changed is that you no longer need a SIM for it. This guide compares the options, lists what to check before you commit to a virtual number, and walks through setting one up in Decibell, which gives you a real, dialable number from a supported country without a SIM card, a contract or porting.

Your three options for a second line

• A second SIM or eSIM from a carrier. Many phones take two lines, but a carrier plan usually means a contract, an ID check at a store and, abroad, roaming charges. It only works where that carrier operates.
• A second physical phone. Simple and fully separate, but you now carry, charge and update two devices and still need a plan for the second one.
• A virtual phone number in an app. The number lives in an account instead of on a SIM. Calls and texts arrive over the internet, so the same line works wherever you have a connection, on any phone you sign in to.

What to check before you choose a virtual number

• Both SMS and voice. Some services offer text-only numbers. Decibell numbers send and receive SMS, receive MMS media inline and make and receive voice calls; on iPhone, incoming calls ring through the native call screen like any other call.
• Check what's available. Available numbers are shown in the app and may change over time. Look in the app before you count on a specific number.
• Verification codes. Most platforms accept virtual numbers, but some banks, ride-sharing apps and crypto exchanges block them. Keep a regular mobile number for those accounts.
• Emergency calls. Virtual numbers cannot reach 911, 112, 999 or other emergency services. A second line is a convenience, not a replacement for your main phone.
• How you can leave. Decibell numbers are in-app purchases and auto-renewing subscriptions through the App Store; you can release a number and cancel at any time, with no multi-year contract.

Set up a second number in Decibell

1. Install the app and create an account. Decibell is available for iPhone and Android. Sign up with your email or phone; the app creates your inbox and asks only for the permissions you choose to allow.
2. Pick a country and area code. Search the numbers available right now, filter by area code if you want a familiar prefix, and provision the one you like. The number is yours within seconds.
3. Send a first text. Start a conversation from the new number and watch the status move from pending to sent to delivered. If a message fails, the app shows the reason.
4. Save the people you talk to. Add names and numbers to the address book inside the app, so the second line has its own contacts and your personal contacts stay where they are.
5. Turn on notifications. New messages and missed calls arrive as push notifications, so the line stays reachable even when the app is closed.

Keep the second line tidy

Every number you own gets its own threaded inbox, so a conversation on your travel line never mixes with a marketplace reply. Pin the threads that matter, archive the ones that are finished, and block any number that should not reach you again. Call history keeps every inbound and outbound call with its duration, and tapping an entry calls back.

A virtual number is meant for personal, one-to-one conversations with people you know. Business, marketing or bulk texting is not permitted on Decibell numbers, and US carriers require businesses to register their own messaging program before texting US recipients.

When you no longer need the line, release the number from the app. Note that deleting your account does not cancel an active App Store subscription on its own; cancel it from your App Store account settings as well.