Second Phone Number for Business: 4 Ways to Get One and What It Costs

The easiest way to get a second phone number for business is to add a business line to the phone you already carry, either as a second carrier line on an eSIM or as a business number inside a calling app. For most small businesses, a business phone app from a cloud phone provider is the better choice, because the number belongs to the company, works on any device and includes texting, voicemail and call routing.

A second number only solves half the problem, though. The details that matter later are who owns the number, whether it can text customers legally, where 911 calls are located and what happens when an employee leaves. This guide compares the four ways to get a second number, what each one really costs and how to set one up without missing calls.

Why Keep Separate Business and Personal Phone Numbers?

Keeping separate business and personal phone numbers is less about having two numbers and more about control. Once your personal cell is on a truck wrap, a Google listing and a stack of invoices, you cannot stop work calls at dinner, hand the line to an employee or sell the business with the number attached.

A dedicated business line also makes your calls easier to manage. You can send after-hours calls to voicemail, route them to a teammate, record a professional greeting and keep a clean record of customer calls and texts that does not live on your personal device.

• Privacy: customers and vendors never see your personal number
• Boundaries: business calls follow business hours, personal calls do not
• Transferability: the number can move to a new hire or a new owner
• Records: call and text history stays with the company account
• Professional image: a consistent greeting, caller ID and voicemail

What Are the 4 Ways to Get a Second Phone Number for Business?

There are four practical options, and they differ mainly in who owns the number and how much the business can control. The table below compares them on the points that cause problems later.

Method	How it works	Who controls the number	Best for
Second carrier line (eSIM)	A second mobile plan on the same phone using Dual SIM	The account holder at the carrier	Solo owners who need native cellular calling with no app
Second phone number app	A standalone app that adds a virtual number on your cell	The app account holder, often the individual	Freelancers testing a side business
Business phone system app	A cloud phone system user with a mobile and desktop app	The business, in one admin portal	Small teams that want a number they own and can grow
Call forwarding number	A virtual number that forwards to an existing phone	The provider account holder	Adding a local or toll-free number in front of an existing line

1. A Second Carrier Line on an eSIM

Most current smartphones can hold two lines at once. On an iPhone, Apple's guide to using Dual SIM with an eSIM explains how to label one plan Business and the other Personal, choose a default line and pick which number each contact uses. Both lines can make calls and send messages, though the phone uses one cellular data network at a time.

An eSIM business phone number is a good fit if you want calls in the phone's own dialer and do not want another app. The trade-offs are cost, since you are paying for a second mobile plan, and limited business features. Carrier lines rarely include an auto attendant, shared ring groups or a web portal for routing, and the number sits on a consumer-style account.

2. A Standalone Second Phone Number App

A second phone number app adds a virtual number to your existing phone over Wi-Fi or mobile data. Setup takes minutes and many apps offer low-cost or free tiers, which is why these apps dominate search results for this topic.

The weak spot is ownership. Many of these accounts are opened by an individual on a personal email, so the number can leave with the employee who set it up. Free tiers can also limit texting or reclaim unused numbers. Before relying on one, check that the business can port the number out and that business texting is registered.

3. A Business Phone App From a Cloud Phone System

A cloud phone system gives each person a business number or extension that rings in a mobile app, a desktop app and, if you want, a desk phone. With a business phone app like ConnectUC, you call and text from the business number, see co-worker presence and read voicemail transcriptions, while the company manages every number from one account.

This is the option that grows with the business. When you hire your first employee, you add a user instead of buying another phone. When someone leaves, you reassign their number. A full cloud business phone system also adds auto attendants, ring groups and business hours that a second SIM cannot provide.

4. A Forwarding Number in Front of an Existing Phone

A virtual number can simply forward calls to a cell, a landline or several phones at once. It is a quick way to add a local or toll-free number for marketing without changing devices. Decide first whether a local or toll-free number fits the customers you want to reach.

Plain forwarding has limits: outbound calls and texts usually still show your personal number unless the provider offers an app. Business-grade call forwarding solves that with simultaneous ring, time-based rules and failover, plus an app for calling out from the business number.

How Much Does a Second Phone Number for Business Cost?

The sticker price is rarely the full cost. What you pay also depends on texting, how many people will answer the number and whether you will need routing later. Use this breakdown when comparing quotes.

Method	Typical billing	Usually included	Common extra costs
Second carrier line (eSIM)	A separate monthly mobile plan	Cellular calls and texts in the native dialer	Business features, multi-user routing
Second phone number app	Monthly per number, sometimes a free tier	Calls and texts in the app	Texting registration, extra numbers, higher tiers for teams
Business phone system app	Monthly per user	Number, calling, texting, voicemail, apps	Advanced features on higher plans
Forwarding number	Monthly per number, sometimes per minute	Inbound forwarding	Outbound calling, texting, minute overages

For reference, Dial Raven's Starter plan is $14.99 per user per month and includes a business phone number, unlimited calling in the U.S. and Canada, business SMS and MMS and the ConnectUC mobile app. Pro, at $24.99 per user per month, adds an auto attendant, call recording and analytics. You can compare both on our pricing page.

Here is a simple way to think about it: if the number will only ever ring one person's phone, any method works. If you expect to add a second person, an after-hours rule or a menu within a year, start with a system that already supports them so you do not have to change numbers twice.

What Most Second-Number Guides Leave Out

The ranking guides on this topic mostly compare app prices. The problems small businesses actually run into tend to show up months later, in three places.

Who Owns the Number

Customers save the number, print it on reviews and call it for years. Make sure it is held in the business's name, on an account the owner controls, with admin access for more than one person. The FCC's number portability guide confirms you can generally keep a number when changing between wireline, wireless and internet providers in the same area, and that your old company cannot refuse to port because of an unpaid balance.

Whether It Can Text Customers

Texting from a new 10-digit business number is not just a toggle. U.S. carriers expect businesses to complete 10DLC registration for the brand and the type of messages they send, and unregistered traffic is more likely to be filtered. Every message also needs a working opt-out, and the updated TCPA opt-out rules that take effect on November 25, 2026 tighten how quickly and broadly you must honor a stop request.

Where 911 Calls Are Located

Calls from a carrier eSIM line use the mobile network's location. Calls from an internet-based app depend on the provider. The FCC's rules on 911 dispatchable location require interconnected VoIP providers to give users a way to update their registered location and to detect when a 911 call comes from a different place. Keep the registered address current for anyone who uses the app as their main work line.

How to Get a Second Phone Number for Business: Step by Step

Whichever method you choose, the setup order below avoids missed calls and lost texts. It assumes you want to add a business line to your cell phone and move business calls off your personal number.

• Decide whether you want a new number or to port the one customers already have
• Open the account in the business's name with a company email address
• Choose a local or toll-free number that matches your service area
• Install the app or activate the eSIM, then label the lines Business and Personal
• Record a business greeting and set business hours and an after-hours rule
• Complete texting registration before sending appointment or marketing texts
• Update your website, Google Business Profile, invoices and vehicle signage
• Forward or announce the old number for a few months so no caller is lost

If customers already know your personal cell, the cleanest long-term move is often to port that number into a business account and get a new personal number instead. Porting needs account details that match your current carrier exactly, so gather them before you start. Want help deciding? Our team can review your current setup and recommend the simplest path during free onboarding.

Which Second Number Option Is Right for You?

Match the method to where the business is heading, not just where it is today.

Your situation	Best option	Why
Solo owner, calls only, no plans to hire	Second carrier line (eSIM)	Native dialer, cellular coverage, no app
Testing a side business on a tight budget	Second phone number app	Fast setup, low commitment
Planning to hire or already have staff	Business phone system app	Company owns numbers, add users as you grow
Need a marketing number in front of an existing line	Forwarding number	Adds a local or toll-free number without new devices
Customers text you for quotes and appointments	Business phone system app	Registered texting and opt-out handling on the business number

For most growing small businesses, the business phone system app wins because it solves the second-number problem and the next three problems at the same time: hiring, routing and texting.

Frequently Asked Questions

A second phone number for business is worth setting up properly the first time, in an account your company owns, with texting registered and routing ready for your first hire. If you want a business number on the phone you already carry, get started with Dial Raven or talk to our team about porting your current number and setting up the ConnectUC app.