# Firebase auth in SDK 9 does not work on ios sim or devices **URL:** \ **Category:** Ionic Framework\ **Created:** [September 23, 2021, 8:50pm UTC](https://forum.ionicframework.com/t/firebase-auth-in-sdk-9-does-not-work-on-ios-sim-or-devices/215362 "2021-09-23T20:50:37Z")\ **Posts on this page:** 1\ **Showing post:** 11
**Author:** ![whit3](https://sea1.discourse-cdn.com/ionicframework/user_avatar/forum.ionicframework.com/whit3/32/140469_2.png) [@whit3](https://forum.ionicframework.com/u/whit3)\ **Post date:** [January 10, 2022, 1:55pm UTC](https://forum.ionicframework.com/t/firebase-auth-in-sdk-9-does-not-work-on-ios-sim-or-devices/215362/11 "2022-01-10T13:55:16Z")
Thanks it really helped me solve my issue @ > [@Can't login to my firebase backend base app on iOS but works on android](https://forum.ionicframework.com/t/cant-login-to-my-firebase-backend-base-app-on-ios-but-works-on-android/219216): > > I need help with my app on iOS. I’ve completed building the app using firebase for the backend, while building I was testing it using only android device and emulator since I didn’t had a MacBook everything was good and working well, because of the fact that I need it on iOS too I bought MacBook pro 2012 recently and have installed all that is need to run the app and it’s runs on the emulator without errors but can’t l login on the emulator, if I try with a wrong password it returns an error me… --- _[View the full topic](https://forum.ionicframework.com/t/firebase-auth-in-sdk-9-does-not-work-on-ios-sim-or-devices/215362)._