More bars.
More places.
Add a second cellular network to the phone you already have.
Keep Verizon, AT&T or T-Mobile. SecondBars gives you another network for dead zones, crowded places, road trips and travel.
One phone.
Two networks.
Your phone can already run two lines at once. SecondBars is the second one.
- Networks on one phone
- 2
- Numbers to change
- 0
- Backup data, up to Unlimited
- 3 GB+
- To activate
- Minutes

Meet SecondBars
Your carrier is great.
Until it isn't.
SecondBars adds another cellular network to your phone without replacing the plan you already have.
- Backup data, from 3 GB to Unlimited
- A second cellular network
- Instant eSIM setup
- Keep your phone number
- Keep your existing carrier
- Cancel anytime
Needs an unlocked phone that can run two lines with eSIM, and a US service address.
We made better cell coverage ridiculously easy.
Keep your carrier
No switching plans. No porting numbers. No awkward breakup with your phone company.
SecondBars lives alongside the service you already have.
Tap. Install. Connected.
SecondBars is an eSIM.
No store. No physical SIM. No waiting for the mail.
Use it when you need it
Dead zone? Crowded stadium? Road trip?
Your second network is already on your phone.
Your carrier has no bars.
You still do.
One network can't be the best network everywhere.
SecondBars gives your phone another option when your primary carrier isn't cutting it.
Get SecondBars
Built for the places one carrier can't cover.
Dead zones
Your usual carrier disappears. Your second network may still be there.
Road trips
Coverage changes by the mile. Give yourself another network to choose from.
Stadiums and airports
One network gets congested. Another may have room.
Travel
With a Global package, use SecondBars data abroad instead of a daily roaming pass.
Work
Because “sorry, I didn't have service” isn't always an option.
Everyday life
The grocery store. Your basement. Your kid's soccer field. That weird stretch of highway.
More networks means more chances to stay connected.
Your second network travels too.
With a Global package, the same SecondBars eSIM that backs you up at home keeps you connected abroad, in supported countries.
- No airport SIM kiosks.
- No swapping cards.
- No daily carrier roaming pass.
Land. Turn it on. Go.
See Global packagesWhy depend on one network?
| Your carrier alone | Your carrier + SecondBars | |
|---|---|---|
| Cellular networks | 1 | 2 |
| Keep your number | Yes | Yes |
| Backup for dead zones | No | Yes |
| Data abroad | Daily roaming pass | With a Global package |
| Physical SIM needed | Sometimes | No |
| Switch carriers | To get another network | Never |
Same phone. Same number. More coverage.
What's inside SecondBars?
A second network
Another cellular connection alongside your primary carrier.
3 GB to Unlimited
Backup data, ready when you need it. You pick how much.
5G access
Fast data wherever it is supported.
US or Global
Choose a package for the United States, or one that also works abroad.
One permanent eSIM
Install once. Keep it on your phone.
Works alongside your plan
SecondBars isn't trying to replace your phone company.
More bars.
Less carrier nonsense.
- No new phone number
- No carrier switch
- No physical SIM
- No store visit
- No waiting for shipping
- No daily roaming pass
- No new travel eSIM every trip
- No long-term contract
SecondBars in minutes.
Sign up, add the eSIM, and get your second set of bars. Your existing carrier stays exactly where it is.
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.
One carrier was never going to cover everywhere.
AT&T has places Verizon doesn't.
Verizon has places T-Mobile doesn't.
T-Mobile has places AT&T doesn't.
Yet for decades, your phone plan has forced you to pick one. SecondBars is built around a simpler idea: why choose?
Keep your carrier. Add another.
Questions
When 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.
Give your phone a second set of bars.
SecondBars adds another cellular network to your existing phone in minutes.
- Backup data from 3 GB
- Keep your current carrier
- Keep your number
- Cancel anytime
Your carrier + SecondBars. Better together.