iOSIP

iOSIP routes calls from the stock iOS 6 Phone app through SIP. It provides outgoing and incoming calls, native call UI, audio routing, call controls, return-to-call status bar behavior, recents integration, and missed-call notifications.

Tested devices

• iPhone 3GS running iOS 6.1.6
• iPhone 5 running iOS 6.1.4
• iPhone 4S running iOS 6.1.3
• iPhone 6s Plus running iOS 9.3.4

The package contains both armv7 and arm64 binaries. Other devices and iOS versions are untested.

Settings languages: English and Korean.

Requirements

• Jailbroken iOS device with MobileSubstrate and PreferenceLoader
• Theos with an iPhoneOS 10.3 SDK
• macOS toolchain capable of building armv7
• PJSIP source at commit 3e7b75cb2e482baee58c1991bd2fa4fb06774e0d

Build

Initialize PJSIP:

git submodule update --init
cd vendor/pjproject
printf '%s\n' '#define PJ_CONFIG_IPHONE 1' \
  '#include <pj/config_site_sample.h>' > pjlib/include/pj/config_site.h
DEVPATH=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer \
IPHONESDK="$THEOS/sdks/iPhoneOS10.3.sdk" \
ARCH="-arch armv7" \
MIN_IOS="-miphoneos-version-min=6.0" \
./configure-iphone --disable-video
make dep
make
cd ../..

Build iOSIP:

make clean package FINALPACKAGE=1

Package identifier: me.ancal.iosip.

Configuration

Install package, then open Settings > iOSIP. Enter SIP server, port, username, and password, then tap the save and re-register button. MediaHost normally stays empty; set it only when public SDP address differs from RTP address.

For manual configuration, copy config/device.example.plist to:

/var/mobile/Library/Preferences/me.ancal.iosip.plist

Never commit a populated config/device.plist.

Warning

This tweak uses private iOS APIs and replaces normal Phone app call routing with SIP-first behavior. Do not use it for emergency calling.

License

iOSIP is licensed under GPL-2.0-or-later. See LICENSE.

PJSIP in vendor/pjproject is also available under GPL-2.0-or-later or a separate commercial license.