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What you need
An Android phone with root, an iPhone on iOS 17, and a network they share.
The gateway: an Android phone
| Phone | Samsung Galaxy S10+ with the Exynos chip (SM-G975F). The S10 and S10e use the same chip and are likely to work, but are untested. |
| Root | Magisk installed and working |
| Android | 9 or later |
| SIM | The SIM whose number you want on your iPhone |
| Power | Plugged in, or charged daily: it handles every call |
Why root? The gateway has to pick up call audio and pass it to your iPhone. Android only lets system-level software do that, so the gateway installs as a Magisk module.
Why only a few phones? Every chipset routes call audio differently, so each family needs its own work. Google Pixel is next. Check your phone, or tell us your phone and we’ll prioritise by demand.
Rooting
Rooting means unlocking the bootloader and installing Magisk. It wipes the phone, can affect the warranty, and some apps (often banking apps) refuse to run on a rooted phone. Many people use a spare phone as the gateway for exactly these reasons. Use a guide written for your exact model.
The iPhone
- iOS 17 or later
- The LineFerry app, from TestFlight during early access
The network
Today, the two phones must be able to reach each other:
- Same Wi-Fi. Both phones on your home or office network. Guest networks often block devices from talking to each other; use the main network.
- The gateway’s hotspot. Turn on the hotspot on the gateway and join it from the iPhone.
How the network affects ringing, worth reading before you rely on the hotspot.