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# 3.6 Phone Number Login Setup

{% hint style="warning" %}
To use this feature, you need to upgrade to the Firebase Spark Plan and add a billing account, as per the recent Firebase update.
{% endhint %}

To use this, from your Firebase Console > Authentication > Turn on the **Phone** provider and add your testing number and OTP, which are required for texting purposes.

<figure><img src="/files/yOk8mIUi6hUbfyLQZDAp" alt=""><figcaption></figcaption></figure>