Which Phone Number to Use When Selling Online
By 2Phon Team · · 5 min read
Selling on Facebook Marketplace, Craigslist or eBay? Keep buyers in the platform's chat, and when a phone number is needed, give a second number instead of your personal one. Here's how to set it up safely.
Key takeaways
- Keep most buyer conversations inside the marketplace's chat — it's safer and easier to report.
- When a buyer needs to call you, give them a second number, not your personal one.
- Never share a verification code with a buyer. It's a well-known scam.
- 2Phon gives your iPhone a real second number for buyer calls and verification codes.
When you sell online, use a second phone number — not your personal one — for anything buyers can see, and keep most of the conversation inside the marketplace's own chat. That way, strangers who answer your listing never get the number your bank, family and carrier know.
You don't need a second phone for this. An iPhone app like 2Phon gives you a real second number that buyers can call and that can receive verification codes. This guide covers when to share a number at all, how to set up a selling number, and the scams that target sellers' phone numbers.
Do you need to give buyers a phone number at all?
Often you don't. Facebook Marketplace runs through Messenger, and eBay has its own messages. For most sales, that's all you need.
There are good reasons to stay in the platform's chat. Meta's guide to Marketplace scams lists requests to move the conversation off Facebook — to another messaging app or to the phone — as a warning sign, because scams are harder to track once you leave (Meta: scams on Marketplace).
A phone number is still useful when:
- you're arranging a pickup or delivery and need to talk on the day;
- the item is large or expensive and the buyer has questions that are easier to answer by voice;
- you post on a site where listings show a contact number;
- you sell regularly and want one number for all selling, separate from your life.
In all of those cases, the number should be one you can walk away from.
Your personal number vs a selling number
A dedicated selling number keeps strangers, spam and scams away from the number that matters. Here's how the two compare for marketplace use.
| Personal number | Second number (2Phon) | |
|---|---|---|
| Buyers can call you | Yes | Yes |
| Receives verification codes | Yes | Yes |
| Linked to your bank and carrier account | Yes | No |
| Can be given up without changing your main number | No | Yes |
| Easy to keep selling separate from the rest of your life | No | Yes |
Why it matters: a phone number can be a lookup key for your name and address, and a target for code scams and SIM swaps. We explain the risks in what someone can do with your phone number.
How to set up a phone number for selling online
Get a second number, keep chat in the app, and use the number only for calls with buyers you've vetted.
Get a second number on your iPhone
Install 2Phon and pick your number — numbers are available from dozens of countries. It's a real mobile number, not VoIP, and it works alongside your personal line on the same phone.
Use it wherever a selling account or listing asks for a number
If a selling platform or classifieds site asks for a contact number, give the second one. When it sends a verification code, the code arrives in the 2Phon app with a push notification.
Keep messages in the marketplace's chat
Answer questions, agree the price and set the time in Messenger, eBay messages or the site's own inbox. That keeps a record the platform can review if something goes wrong.
Share the number for calls only when needed
Once a buyer looks genuine, give them your second number so they can call you on pickup day. The buyer sees your 2Phon number on calls you make, never your personal one.
Take and make calls on the second number
Call buyers back from the 2Phon app. If someone texts the number, the message shows up in the app — you reply with a call, since 2Phon doesn't send texts.
Scams that target sellers' phone numbers
Most selling scams try to get either your money or your verification codes. Your phone number is the way in for the second kind.
The "verify you're real" code scam
A "buyer" says they've heard about fake listings and want to check that you're a real person. They tell you a code is coming to your phone and ask you to read it back. It's a verification code for their account — often a Google Voice number they're setting up with your number, which they can then use to scam other people while hiding behind your number (FTC: the Google Voice scam).
If you already shared one, the FTC suggests following Google's steps to reclaim your number and reporting it at ReportFraud.ftc.gov — we walk through both in what to do after the Google Voice code scam.
Fake payments and overpayment
The FTC's advice for sellers (FTC: selling stuff online):
- Don't accept a mobile payment from someone you don't know. Payment "notifications" can be faked, and a screenshot isn't proof. Check your own account before you hand anything over.
- Never deposit a check for more than the price, and never send back "the difference". The check can bounce days later.
- Many sites recommend selling to local buyers in person, for cash. For buyers far away, check what seller protection the platform offers.
"Let's move to another app"
A buyer who immediately wants to leave the marketplace for another messaging app or a phone call is a warning sign. Stay in the platform's chat until you're comfortable, and when you do share a number, make it your second one.
Before you meet a buyer
A phone call is useful on the day; your personal details aren't.
Pickup checklist
- Agree the time, place and price in the marketplace chat.
- Meet in a busy public place, or have someone with you at home.
- Give the buyer your second number for calls on the day — not your personal one.
- Confirm payment in your own account before handing over the item.
- Never read out a code that arrives on your phone.
Where 2Phon fits
2Phon is an iPhone app that gives you a real second phone number from dozens of countries. It's built for two jobs: receiving verification codes and making and receiving real calls. For sellers, that means a number buyers can call, which you can keep separate from your personal life for as long as your subscription is active.
What it doesn't do: it doesn't send text messages, and it's iPhone only. Written conversations stay in the marketplace's chat; calls go through your second number.
Get 2Phon on the App Store — a real second number for buyer calls and verification codes.
Sell with less exposure
Selling online doesn't have to mean giving strangers your personal number. Keep chat in the platform, give buyers a second number for calls, and never share a code. For the bigger picture, see what a second phone number is, and if you also do side work, how to get a separate work number on iPhone. If you need to call a buyer without showing any number, here's how to hide your number when calling.
Frequently asked questions
Do I have to give buyers my phone number?
Usually not. Marketplace chats like Facebook Messenger and eBay messages are enough for most sales, and keeping the conversation there makes scams easier to spot and report. Share a number only when a call genuinely helps, such as arranging a pickup.
Why does a buyer want to send me a verification code?
It's a scam. The buyer is trying to use your number to open or take over an account. The FTC says anyone who asks for your verification code is a scammer, so don't share it.
Can I text buyers from my 2Phon number?
No. 2Phon receives verification codes and makes and takes real calls, but it doesn't send texts. Keep written conversations in the marketplace's own chat and use your 2Phon number for calls.
What happens to my selling number when I stop selling?
Your 2Phon number is yours while your subscription is active. If you cancel, the number may be released and later given to someone else, so update any listing or account that still shows it.