Calls that behave like calls
Answer from the lock screen. Calls show in Recents. Callers see your own number, because the call really is on your SIM.
Early accessFounding members save 50%
Your SIM's calls and texts, on any iPhone.
LineFerry turns an Android phone into a GSM gateway. Your SIM stays in it, and every call and text reaches your iPhone on the native call screen.
- CallKit native
- Rings with the app closed
- Self-healing gateway
Gateway · Galaxy S10+
Online- SIM 1
- LTE
- Relay target
- iPhone · Wi-Fi
- Wake-up
- APNs VoIP
- Supervisor
- Healthy
Event log
- 14:02:11.204Incoming call+1 555 014 2368
- 14:02:11.231VoIP push → iPhone200 OK · 0.39 s
- 14:02:11.802iPhone ringingCallKit
- 14:02:14.517Answered on iPhoneaudio up
Why LineFerry
A real phone line on your iPhone, not another VoIP number.
Texts from your own number
Bank codes, deliveries, family. Every SMS to your SIM reaches the iPhone with a notification, and replies go out from your number.
The SIM never moves
No porting, no eSIM transfer, no new number. Keep your carrier and plan; the SIM stays in an Android phone you already own.
The iPhone app
Everything about your line, in one app.
Messages, calls, keypad and contacts for your gateway line, with a Gateway tab that shows the connection at a glance.
Real app screens with sample data.
How it works
Three hops. No new number.
Your carrier delivers the call to your SIM as usual. The gateway relays it to your iPhone, and your voice goes back the same way.
Caller
Any phone, anywhere
GSM / LTE
Your carrier
Same plan, same number
Voice call
LineFerry gateway
Android phone holding your SIM
Wi-Fi · audio + SMS
iPhone
Rings on the native call screen
Wake-up path When the iPhone app is closed, the gateway sends an Apple VoIP push so the call still rings.
Use cases
Built for people who carry two phones today.
An iPhone that can't use your SIM
No SIM tray, or not allowed on the mobile network. Keep the SIM in an inexpensive Android and use the iPhone for everything.
Explore use casesYour home number, abroad
Leave the gateway at home and answer your home number in another country. Arrives with calls from anywhere.
Explore use casesTwo numbers, one phone
Your second line lives in an Android on the desk. Both numbers ring on the iPhone in your pocket.
Explore use casesHonest about what works today.
Calls and texts over Wi-Fi work now, encrypted between your phones. Ringing over the hotspot with the app closed and calls from anywhere are in progress.
Pricing
One line. One simple price.
No minutes and no per-text charges. Your carrier bills calls exactly as before.
Monthly
$3
Cancel any time in the App Store.
Founding members
Founding members
$1.50
For your first 3 months when you join from the waitlist, then $3 a month.
Join the waitlistYearly
$30
Two months free compared with monthly.
Questions, answered.
Do I need to root the Android phone?
Yes, for now. The gateway needs root access to handle calls on the SIM. The setup guide checks your phone first, and a gateway that doesn't need root is on the roadmap.
Does my carrier know or charge extra?
No. Calls and texts happen on your SIM in the gateway phone, so your carrier sees and bills them as normal calls and texts.
What happens if the iPhone can't be reached?
After about a minute without an iPhone, while the gateway is off Wi-Fi, the gateway rings calls on its own screen instead, so nothing is missed.
Is my call audio private?
Audio and texts travel directly between your two phones over your own network; they don't pass through our servers, and the link between them is encrypted. Read the security model.
Request early access.
We onboard gateways in small batches so every one gets proper support.