Hi, Just tried your code, added mine Plist file, App is successfully connecting with Firestore also.
but when I try to join the call, nothing happens. Any idea what's gone wrong. using it in two real iPhones and all permissions are in place.

Checked:
Firebase - working
Permissions - Working

I have tried your code there's some Issue with it
exampe
User A => Starts Call
User B => Joins Call
User A Can see User B steam but
User B Can't see User A stream even after adding IceCandidates of User A
can you please fix it

I would like to try your project but I can't go through yarn android, I did all instructions successfully then after that I tried to start the emulator but there's error installing the app. What could be the solution for this?

> Task :app:processDebugGoogleServices FAILED
Parsing json file: E:\Download 2nd\00 Developer Sites\sample-templates\react-native-web> root project > Resolve files of :classpath > gradle-api-3.6.2.jar
rtc-firebase-master\android\app\google-services.json
41 actionable tasks: 41 executed
Note: E:\Download 2nd\00 Developer Sites\sample-templates\react-native-webrtc-firebase-
master\node_modules\@react-native-firebase\app\android\src\reactnative\java\io\invertas
e\firebase\app\ReactNativeFirebaseAppInitProvider.java uses or overrides a deprecated A
PI.
Note: Recompile with -Xlint:deprecation for details.
Note: E:\Download 2nd\00 Developer Sites\sample-templates\react-native-webrtc-firebase-
master\node_modules\react-native-webrtc\android\src\main\java\com\oney\WebRTCModule\Pee
rConnectionObserver.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
Note: E:\Download 2nd\00 Developer Sites\sample-templates\react-native-webrtc-firebase-
master\node_modules\react-native-webrtc\android\src\main\java\com\oney\WebRTCModule\Pee
rConnectionObserver.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:processDebugGoogleServices'.
> No matching client found for package name 'com.webrtc_firebase'

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option 
to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 4m 38s

error Failed to install the app. Make sure you have the Android development environment
 set up: https://reactnative.dev/docs/environment-setup. Run CLI with --verbose flag fo
r more details.
Error: Command failed: gradlew.bat app:installDebug -PreactNativeDevServerPort=8081    
Note: E:\Download 2nd\00 Developer Sites\sample-templates\react-native-webrtc-firebase-
master\node_modules\@react-native-firebase\app\android\src\reactnative\java\io\invertas
e\firebase\app\ReactNativeFirebaseAppInitProvider.java uses or overrides a deprecated A
PI.
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command. 

Getting following issues in the build when tried

1. Failed to add ICE candidate
2. Failed to set remote answer sdp: called in wrong state: kStable

Task :app:installDebug FAILED
Skipping device 'HUAWEI SCL-U31 - 5.1.1' for 'app:debug': minSdkVersion [24] > deviceApiLevel [22]
108 actionable tasks: 90 executed, 18 up-to-date
Note: C:\Users\Dell\Desktop\react-native-webrtc-firebase\node_modules@react-native-firebase\app\android\src\reactnative\java\io\invertase\firebase\app\ReactNativeFirebaseAppInitProvider.java uses or overrides
a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: C:\Users\Dell\Desktop\react-native-webrtc-firebase\node_modules\react-native-webrtc\android\src\main\java\com\oney\WebRTCModule\WebRTCModule.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
Note: C:\Users\Dell\Desktop\react-native-webrtc-firebase\android\app\src\debug\java\com\webrtc_firebase\ReactNativeFlipper.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.

when i click on stop call button app still uses camera and microphone

I keep getting this error when trying to join call and the callee collection is never created in the respective rooms in firestore database. On iOS. On android once i try to join call the app closes.

Possible Unhandled Promise Rejection (id: 0):
Object {
"message": "SessionDescription is NULL.",
"name": "SetRemoteDescriptionFailed",
}
JSON value '{
}' of type NSMutableDictionary cannot be converted to .sdp must not be null

in metro this comes up as an error:

Possible Unhandled Promise Rejection (id: 0):
Object {
  "message": "SessionDescription is NULL.",
  "name": "SetRemoteDescriptionFailed",
}

The callee collection also never gets created in the respective rooms in firestore database.

Sample of sdp written to database

_sdp: v=0o=- 765269967391877801 2 IN IP4 127.0.0.1s=-t=0 0a=group:BUNDLE audio videoa=msid-semantic: WMS a3a6a14c-980f-4052-a881-e53290c2e9a8m=video 100c=IN IP4 0.0.0.0a=rtcp:9 IN IP4 0.0.0.0a=ice-ufrag:qfEea=ice-pwd:aMtS7ouM3ykOCV6z7jx0hhlSa=ice-options:trickle renominationa=fingerprint:sha-256 01:13:79:2E:BA:E3:67:9A:77:66:90:00:D7:62:BA:31:2C:48:FC:EB:8C:21:22:7E:5B:9D:0E:71:82:5F:63:5Aa=setup:actpassa=mid:audioa=extmap:1 urn:ietf:params:rtp-hdrext:ssrc-audio-levela=extmap:2 http://www.webrtc.org/experiments/rtp-hdrext/abs-send-timea=extmap:3 http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01a=sendrecva=rtcp-muxa=rtpmap:111 opus/48000/2a=rtcp-fb:111 transport-cca=fmtp:111 minptime=10;useinbandfec=1a=rtpmap:103 ISAC/16000a=rtpmap:9 G722/8000a=rtpmap:102 ILBC/8000a=rtpmap:0 PCMU/8000a=rtpmap:8 PCMA/8000a=rtpmap:105 CN/16000a=rtpmap:13 CN/8000a=rtpmap:110 telephone-event/48000a=rtpmap:113 telephone-event/16000a=rtpmap:126 telephone-event/8000a=ssrc:866776128 cname:OXEDL0qxAsrhPmB7a=ssrc:866776128 msid:a3a6a14c-980f-4052-a881-e53290c2e9a8 256a9ac0-8163-45b5-ae52-0ece88651c51a=ssrc:866776128 mslabel:a3a6a14c-980f-4052-a881-e53290c2e9a8a=ssrc:866776128 label:256a9ac0-8163-45b5-ae52-0ece88651c51m=video 9 UDP/TLS/RTP/SAVPF 96 97 98 99 100 101 127c=IN IP4 0.0.0.0a=rtcp:9 IN IP4 0.0.0.0a=ice-ufrag:qfEea=ice-pwd:aMtS7ouM3ykOCV6z7jx0hhlSa=ice-options:trickle renominationa=fingerprint:sha-256 01:13:79:2E:BA:E3:67:9A:77:66:90:00:D7:62:BA:31:2C:48:FC:EB:8C:21:22:7E:5B:9D:0E:71:82:5F:63:5Aa=setup:actpassa=mid:videoa=extmap:14 urn:ietf:params:rtp-hdrext:toffseta=extmap:2 http://www.webrtc.org/experiments/rtp-hdrext/abs-send-timea=extmap:13 urn:3gpp:video-orientationa=extmap:3 http://www.ietf.org/id/draft-holmer-rmcat-transport-wide-cc-extensions-01a=extmap:5 http://www.webrtc.org/experiments/rtp-hdrext/playout-delaya=extmap:6 http://www.webrtc.org/experiments/rtp-hdrext/video-content-typea=extmap:7 http://www.webrtc.org/experiments/rtp-hdrext/video-timinga=extmap:8 http://www.webrtc.org/experiments/rtp-hdrext/color-spacea=sendrecva=rtcp-muxa=rtcp-rsizea=rtpmap:96 VP8/90000a=rtcp-fb:96 goog-remba=rtcp-fb:96 transport-cca=rtcp-fb:96 ccm fira=rtcp-fb:96 nacka=rtcp-fb:96 nack plia=rtpmap:97 rtx/90000a=fmtp:97 apt=96a=rtpmap:98 VP9/90000a=rtcp-fb:98 goog-remba=rtcp-fb:98 transport-cca=rtcp-fb:98 ccm fira=rtcp-fb:98 nacka=rtcp-fb:98 nack plia=rtpmap:99 rtx/90000a=fmtp:99 apt=98a=rtpmap:100 red/90000a=rtpmap:101 rtx/90000a=fmtp:101 apt=100a=rtpmap:127 ulpfec/90000a=ssrc-group:FID 2850853975 3259115858a=ssrc:2850853975 cname:OXEDL0qxAsrhPmB7a=ssrc:2850853975 msid:a3a6a14c-980f-4052-a881-e53290c2e9a8 3f3952f6-cd3d-4d3e-a2dc-81eda77cf516a=ssrc:2850853975 mslabel:a3a6a14c-980f-4052-a881-e53290c2e9a8a=ssrc:2850853975 label:3f3952f6-cd3d-4d3e-a2dc-81eda77cf516a=ssrc:3259115858 cname:OXEDL0qxAsrhPmB7a=ssrc:3259115858 msid:a3a6a14c-980f-4052-a881-e53290c2e9a8 3f3952f6-cd3d-4d3e-a2dc-81eda77cf516a=ssrc:3259115858 mslabel:a3a6a14c-980f-4052-a881-e53290c2e9a8a=ssrc:3259115858 label:3f3952f6-cd3d-4d3e-a2dc-81eda77cf516

Hey Dipansh (i hope i call you right), you have really GREAT job, thats awesome documentation, anyway do you know how to make every room have more than 2 participants?

Thanks a lot.
Haksa

If one user ends the call how to tell other user that your partner has left the call. Can you kindly help with this issue

I have just clone your project but audio is not working.
Please help as quick as possible

All permission are given

I want to use this app by real device😓

How do I run it on 2 adb devices to test?

How did you test it on 2 device?

Today i got this issues, but not error.
I use your examp, the same goes!
Help me, please!