SecondBars: a second network for your phone
A second network on the phone you already have. Pick how much data you want and where it should work.
Monthly price. Taxes and fees are shown at checkout.
- Keep your number
- Keep your carrier
- Instant eSIM
- Global option
- Cancel anytime
- No roaming passes
Why SecondBars?
Every carrier has places it does not reach. SecondBars puts a second line on the same phone, so there is somewhere else for your data to go when your main line has nothing.
Your carrier, your plan and your number stay exactly as they are.
What's in this package
- Unlimited data, with fair use up to 50 GB a month
- Works across the United States
- One eSIM, installed by QR code
- Renews monthly until you cancel
Directions
Phone compatibility
You need an unlocked phone that supports eSIM and can run two lines at once. That covers most iPhones and Android phones from the last five years.
Coverage and fair use
United States packages work across the US. Global packages also work abroad, in supported countries.
Unlimited is for normal personal use and is priced for up to 50 GB a month. See the fair use policy.
Billing and cancelling
Billed monthly, plus taxes and fees. Your data allowance starts again each month. There is no contract and you can cancel anytime.
SecondBars includes
- A second cellular network
Your phone gets another network alongside your existing carrier.
- Keep your existing number
No porting. No changing your primary phone plan.
- Keep Verizon, AT&T, T-Mobile, etc.
SecondBars sits beside your current carrier instead of replacing it.
- Instant eSIM activation
No physical SIM card. No waiting for something in the mail.
- Backup coverage for dead zones
When your primary carrier has weak or no service, you have another network available.
- 5G where available
Fast cellular data on the SecondBars network.
- International dataWith Global
Use the same SecondBars eSIM when traveling in supported countries.
- No $12/day roaming passWith Global
Use SecondBars abroad instead of activating your carrier's daily roaming option.
- One eSIM that stays on your phone
You don't need to shop for and install a new travel eSIM every trip.
- Works on compatible unlocked phones
Designed for modern dual-SIM/eSIM-capable iPhones and Android devices.
- Unlimited backup data
For maps, messaging, email, browsing, rideshare, and staying connected when your main network fails.
- Cancel anytime
No long-term carrier contract.
Made for
- Dead Zones
Your carrier drops. SecondBars doesn't have to.
- Road Trips
Another network when coverage changes mile by mile.
- Travel
Land, connect, go.
- Crowded Places
A second option when one network is overloaded.
- Off the Beaten Path
More chances of finding a usable network.
- Work Anywhere
Backup data when being offline isn't an option.
No switching required
All the upside of another carrier. None of the pain of switching carriers.
- No new phone number
- No carrier switch
- No physical SIM
- No store visit
- No roaming day passes
- No new eSIM every trip
- No long-term contract
A SecondBars eSIM is ready to be added to this iPhone. Your current line and number stay the same.
Add the eSIM
Check out, scan the QR code, tap Continue. It takes a few minutes and nothing about your current line changes.
Two lines, one phone
SecondBars sits next to your carrier. Calls and texts keep using your number.
Your phone will use cellular data from both lines depending on coverage and availability.
Auto-switch in dead zones
Turn on data switching once. When your carrier loses coverage, your phone moves data to SecondBars by itself.
What is an eSIM?
A SIM that is built into your phone and set up by scanning a code.
2 min readHow two lines work on one phone
Which line handles calls, texts and data when your phone has two.
3 min readTurn on automatic data switching on iPhone
One setting that lets your iPhone move data to SecondBars by itself.
2 min readTurn on automatic data switching on Android
Where to find the setting on Pixel and Samsung phones.
2 min readWill SecondBars work on my phone?
The three things your phone needs, and how to check each one.
3 min read
Frequently asked questions
Go to help centerWhen should I install my eSIM?
Right after checkout, while you are on Wi-Fi. It takes a few minutes, and then the backup line is already on your phone the next time your carrier drops out.
How do I use it?
Leave your carrier as the default for calls and texts. Turn on automatic data switching once and your phone can move data to SecondBars when your carrier has no coverage. You can also pick SecondBars as the data line by hand.
Do I have to leave my carrier, or change my number?
No. SecondBars is a second line that runs alongside the one you have. Your carrier, your plan and your number stay exactly as they are.
What are renewals?
SecondBars is a monthly plan. It renews each month at the regular price, plus taxes and fees, and your data allowance starts again. It keeps renewing until you cancel.
Can I cancel?
Yes, anytime. There is no contract.
Which phones work?
An unlocked phone that supports eSIM and can run two lines at once, which covers most iPhones and Android phones from the last five years. The compatibility guide shows how to check yours.
Support
Need help? Ask us before or after you buy.
Need a full phone plan?
SecondBars is backup data alongside your carrier. If you want a full phone plan with its own US number, calls and texts that also works abroad, Airphone is the same company's main plan.