> For the complete documentation index, see [llms.txt](https://docs.hackle.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.hackle.io/en/development-guide/ios/user-identifier/ios-user-info-crm.md).

# CRM Properties

CRM Properties are stored securely only on the Hackle server and cannot be directly queried through the SDK.

{% hint style="danger" %}
CRM Properties are managed separately and are not deleted or reset when `resetUser()` is called or when `clearAll` is called in `updateUserProperties`.

If a user unregisters or similar actions occur, you must separately call the provided function to delete the information.
{% endhint %}

## Phone Number Collection

{% hint style="info" %}
This feature is supported in iOS SDK 2.46.0 and above.
{% endhint %}

{% hint style="success" %}
Recommendation for Kakao / Text Messages

By mapping the User Identifier to a phone number using this feature, you can use Kakao / Text Messages via Hackle more smoothly.
{% endhint %}

#### setPhoneNumber

Registers the user's phone number.

The phone number is only saved if it is in the correct E.164 format. If no country code is specified, South Korea (+82) is used as the default.

If the user already has a saved phone number, calling this function replaces the existing phone number with the new value.

{% tabs %}
{% tab title="Swift" %}

```swift
let myPhoneNumber = '+821012341234';
hackleApp.setPhoneNumber(phoneNumber: myPhoneNumber);
```

{% endtab %}

{% tab title="Objective-C" %}

```objectivec
NSString *myPhoneNumber = @"+821012341234";
[hackleApp setPhoneNumberWithPhoneNumber:myPhoneNumber];
```

{% endtab %}
{% endtabs %}

#### unsetPhoneNumber

Deletes the phone number registered for the user.

{% tabs %}
{% tab title="Swift" %}

```swift
hackleApp.unsetPhoneNumber();
```

{% endtab %}

{% tab title="Objective-C" %}

```objectivec
[hackleApp unsetPhoneNumber];
```

{% endtab %}
{% endtabs %}

## CRM Marketing Subscription Consent

{% hint style="info" %}
This feature is supported in iOS SDK 2.50.0 and above.

For details on subscription consent status, refer to the [CRM Marketing Subscription Consent Management](/en/development-guide/sdk/user-identifier/crm-subscription.md) documentation.
{% endhint %}

### Subscription Consent Properties

You can consent to or reject subscriptions by message purpose.

Use `HackleSubscriptionOperationsBuilder` to configure the consent status for the desired properties, then finalize the update using a method like `updatePushSubscriptions()`.

You can update the consent status per message channel.

{% tabs %}
{% tab title="Swift" %}

```swift
import Hackle

let subscriptions = HackleSubscriptionOperationsBuilder()
    .marketing(.subscribed)
    .information(.subscribed)
    .build()

hackle.app.updatePushSubscriptions(subscriptions)
```

{% endtab %}

{% tab title="Objective-C" %}

```objectivec
HackleSubscriptionOperationsBuilder *builder = [[HackleSubscriptionOperationsBuilder alloc] init];
[builder marketing:HackleSubscriptionStatusSubscribed];
[builder information:HackleSubscriptionStatusSubscribed];
HackleSubscriptionOperations *subscriptions = [builder build];

[[Hackle app] updatePushSubscriptions:subscriptions];
```

{% endtab %}
{% endtabs %}

#### Promotional Messages

Sets the promotional message subscription consent property.

{% tabs %}
{% tab title="Swift" %}

```swift
import Hackle

let subscriptions = HackleSubscriptionOperationsBuilder()
    .marketing(.subscribed)
    .build()

hackle.app.updatePushSubscriptions(subscriptions)
```

{% endtab %}

{% tab title="Objective-C" %}

```objectivec
HackleSubscriptionOperationsBuilder *builder = [[HackleSubscriptionOperationsBuilder alloc] init];
[builder marketing:HackleSubscriptionStatusSubscribed];
HackleSubscriptionOperations *subscriptions = [builder build];

[[Hackle app] updatePushSubscriptions:subscriptions];
```

{% endtab %}
{% endtabs %}

#### Informational Messages

Sets the informational message subscription consent property.

{% tabs %}
{% tab title="Swift" %}

```swift
import Hackle

let subscriptions = HackleSubscriptionOperationsBuilder()
    .information(.subscribed)
    .build()

hackle.app.updatePushSubscriptions(subscriptions)
```

{% endtab %}

{% tab title="Objective-C" %}

```objectivec
HackleSubscriptionOperationsBuilder *builder = [[HackleSubscriptionOperationsBuilder alloc] init];
[builder information:HackleSubscriptionStatusSubscribed];
HackleSubscriptionOperations *subscriptions = [builder build];

[[Hackle app] updatePushSubscriptions:subscriptions];
```

{% endtab %}
{% endtabs %}

<table><thead><tr><th width="224.09765625">HackleSubscriptionStatus</th><th>Description</th></tr></thead><tbody><tr><td><code>UNKNOWN</code></td><td>Subscription Consent has not been given or denied (<code>default</code>)</td></tr><tr><td><code>SUBSCRIPTION</code></td><td>Explicitly opted in to receive messages</td></tr><tr><td><code>UNSUBSCRIPTION</code></td><td>Explicitly opted out of receiving messages</td></tr></tbody></table>

### Update Push Subscription Consent Status

Updates the user's Push Message subscription consent status.

{% tabs %}
{% tab title="Swift" %}

```swift
let subscriptions = HackleSubscriptionOperationsBuilder()
    .marketing(.subscribed)
    .information(.subscribed)
    .build()

hackle.app.updatePushSubscriptions(subscriptions)
```

{% endtab %}

{% tab title="Objective-C" %}

```objectivec
HackleSubscriptionOperationsBuilder *builder = [[HackleSubscriptionOperationsBuilder alloc] init];
[builder marketing:HackleSubscriptionStatusSubscribed];
[builder information:HackleSubscriptionStatusSubscribed];
HackleSubscriptionOperations *subscriptions = [builder build];

[[Hackle app] updatePushSubscriptions:subscriptions];
```

{% endtab %}
{% endtabs %}

### Update Kakao Message Subscription Consent Status

Updates the user's Kakao Message subscription consent status.

{% tabs %}
{% tab title="Swift" %}

```swift
let subscriptions = HackleSubscriptionOperationsBuilder()
    .marketing(.subscribed)
    .information(.subscribed)
    .build()

hackle.app.updateKakaoSubscriptions(subscriptions)
```

{% endtab %}

{% tab title="Objective-C" %}

```objectivec
HackleSubscriptionOperationsBuilder *builder = [[HackleSubscriptionOperationsBuilder alloc] init];
[builder marketing:HackleSubscriptionStatusSubscribed];
[builder information:HackleSubscriptionStatusSubscribed];
HackleSubscriptionOperations *subscriptions = [builder build];

[[Hackle app] updateKakaoSubscriptions:subscriptions];
```

{% endtab %}
{% endtabs %}

### Update Text Message Subscription Consent Status

Updates the user's Text Message subscription consent status.

{% tabs %}
{% tab title="Swift" %}

```swift
let subscriptions = HackleSubscriptionOperationsBuilder()
    .marketing(.subscribed)
    .information(.subscribed)
    .build()

hackle.app.updateSmsSubscriptions(subscriptions)
```

{% endtab %}

{% tab title="Objective-C" %}

```objectivec
HackleSubscriptionOperationsBuilder *builder = [[HackleSubscriptionOperationsBuilder alloc] init];
[builder marketing:HackleSubscriptionStatusSubscribed];
[builder information:HackleSubscriptionStatusSubscribed];
HackleSubscriptionOperations *subscriptions = [builder build];

[[Hackle app] updateSmsSubscriptions:subscriptions];
```

{% endtab %}
{% endtabs %}


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