A second phone number
for life in the United States
Living in, moving to or visiting the United States? Get a private second number for texts and calls in one app, without a second SIM or a contract.
A second line that goes where you go
Decibell works over Wi-Fi or mobile data, so your second number stays with you in the United States and everywhere else.
A real phone number
Text and call like a regular line. Available numbers are shown in the app.
Texting
Send and receive texts with live delivery status.
Calling
Make and answer calls over the internet. Incoming calls ring like a normal call.
One inbox
Keep your numbers and conversations organized in one app.
No SIM, no contract
No paperwork and no long-term plan.
Cancel anytime
Manage or cancel your subscription anytime in your store account.
From install to first message in 60 seconds
No SIM, no contract, no porting. Open the app, pick a number, and you're online.
Create your account
Sign up in the app with email or phone. Decibell creates your inbox and grants the permissions you choose to allow.
Pick a number
Browse what's available right now, pick a number, and you're ready to text and call.
Send, call, repeat
Start a conversation, place a voice call, share media. Everything lands in your unified inbox with real-time delivery.
Who uses Decibell in the United States
Expats, students and travelers who want a second number without a second SIM.
Expats
Keep your personal number private and stay reachable for friends, family and new contacts while you live in the United States.
Students
Have a separate number for school, housing and new friends during your studies.
Privacy-conscious users
Use a separate number for marketplaces, deliveries and forms instead of giving out your personal number.
Travelers
Stay reachable on the same second number before, during and after your trip.
Second number questions for the United States
Can I get verification codes on it?
Does it work for 911 emergency calls?
Which numbers can I get?
Can I use the number for WhatsApp?
Can I port my existing number?
Is my data private?
Can I use the number for business or marketing texts?
Everything a second line needs, without the contract
Decibell turns one app into your second phone line. Pick a number from the ones available in the app and use it for texts, calls, photos and threaded conversations.
SMS Messaging
Send and receive text messages with delivery and read receipts.
Voice Calls
Crystal-clear VoIP calls with native CallKit on iOS. Incoming calls ring like a regular phone.
Multiple Numbers
Own as many numbers as you need and keep family, travel, and online sign-ups separate in one inbox.
Use It Anywhere
Your number works over Wi-Fi or mobile data, so it stays with you when you travel or move.
Threaded Inbox
Every number and every contact, organized into clean conversations with pin, archive, and unread badges.
Contacts
Save your own contacts inside the app.
Ready to consolidate every number you carry?
Stop juggling SIMs and extra phones. Decibell gives you one inbox for texts and calls. See plans in the app.