# Firebase Phone OTP - iOS

For Firebase phone OTP to work with iOS, you will need to do an extra task.

1. Copy the **REVERSED\_CLIENT\_ID** from your **GoogleService-Info.plist** file
2. Paste the value of the **REVERSED\_CLIENT\_ID** that you copy to the **URL SCHEMES** in your **Info.plist** file

![Copy REVERSED\_CLIENT\_ID from GoogleService-Info.plist](https://2231621966-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MVNlKuUeCM_uD7sLQnM%2F-Me-OTseDtuJH39Kzidv%2F-Me-PnSrBP2_Pxon0T6-%2Fimage.png?alt=media\&token=4f4f1ba2-5f48-4206-b937-5022334326bc)

![](https://2231621966-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MVNlKuUeCM_uD7sLQnM%2F-Me-OTseDtuJH39Kzidv%2F-Me-QAoA_Hgdyt1dWvb8%2Fimage.png?alt=media\&token=8d916c70-32cf-487b-9488-2bcaffb6764d)