diff --git a/packages/dnb-design-system-portal/src/docs/uilib/extensions/forms/data-value-write-events.mdx b/packages/dnb-design-system-portal/src/docs/uilib/extensions/forms/data-value-write-events.mdx
index bbf36931b0e..adcbec6e393 100644
--- a/packages/dnb-design-system-portal/src/docs/uilib/extensions/forms/data-value-write-events.mdx
+++ b/packages/dnb-design-system-portal/src/docs/uilib/extensions/forms/data-value-write-events.mdx
@@ -1,5 +1,5 @@
-| Event      | Description                                                                                                                                                     |
-| ---------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------- |
-| `onChange` | _(optional)_ Will be called on value changes made by the user, with the new value as argument.                                                                  |
-| `onFocus`  | _(optional)_ Will be called when the component gets into focus. Like clicking inside a text input or opening a dropdown. Called with active value as argument.  |
-| `onBlur`   | _(optional)_ Will be called when the component stop being in focus. Like when going to next field, or closing a dropdown. Called with active value as argument. |
+| Event      | Description                                                                                                                                                               |
+| ---------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| `onChange` | _(optional)_ Will be called on value changes made by the user, with the new value e.g. `+47 99999999`. The second parameter is an object: `{ countryCode, phoneNumber }`. |
+| `onFocus`  | _(optional)_ Will be called when the component gets into focus. Like clicking inside a text input or opening a dropdown. Called with active value as argument.            |
+| `onBlur`   | _(optional)_ Will be called when the component stop being in focus. Like when going to next field, or closing a dropdown. Called with active value as argument.           |
diff --git a/packages/dnb-design-system-portal/src/docs/uilib/extensions/forms/feature-fields/PhoneNumber/Examples.tsx b/packages/dnb-design-system-portal/src/docs/uilib/extensions/forms/feature-fields/PhoneNumber/Examples.tsx
index 46bbbf75597..95656ea94d1 100644
--- a/packages/dnb-design-system-portal/src/docs/uilib/extensions/forms/feature-fields/PhoneNumber/Examples.tsx
+++ b/packages/dnb-design-system-portal/src/docs/uilib/extensions/forms/feature-fields/PhoneNumber/Examples.tsx
@@ -110,6 +110,19 @@ export const ValidationRequired = () => {
   )
 }
 
+export const ValidationPattern = () => {
+  return (
+    <ComponentBox>
+      <Field.PhoneNumber
+        value="+47 12345678"
+        label="Label text"
+        onChange={(...args) => console.log('onChange', ...args)}
+        pattern="((?=\\+47)^\\+47 [49]\\d{7}$)|((?!\\+47)^\\+\\d{2} \\d{6})"
+      />
+    </ComponentBox>
+  )
+}
+
 export const WithFilter = () => {
   return (
     <ComponentBox>
diff --git a/packages/dnb-design-system-portal/src/docs/uilib/extensions/forms/feature-fields/PhoneNumber/demos.mdx b/packages/dnb-design-system-portal/src/docs/uilib/extensions/forms/feature-fields/PhoneNumber/demos.mdx
index 7f7176cd134..82ac57c1c52 100644
--- a/packages/dnb-design-system-portal/src/docs/uilib/extensions/forms/feature-fields/PhoneNumber/demos.mdx
+++ b/packages/dnb-design-system-portal/src/docs/uilib/extensions/forms/feature-fields/PhoneNumber/demos.mdx
@@ -42,6 +42,12 @@ import * as Examples from './Examples'
 
 <Examples.ValidationRequired />
 
+### Validation - Pattern
+
+This pattern will strictly match Norwegian mobile numbers, which are defined as having a "+47" country code, followed by a number starting with 4 or 9, and exactly 7 more digits. If the country code is set to any other two-digit code, the pattern will match witch 6 digits after the country code.
+
+<Examples.ValidationPattern />
+
 <VisibleWhenVisualTest>
   <Examples.LongLabel />
 </VisibleWhenVisualTest>
diff --git a/packages/dnb-eufemia/src/extensions/forms/Field/PhoneNumber/PhoneNumber.tsx b/packages/dnb-eufemia/src/extensions/forms/Field/PhoneNumber/PhoneNumber.tsx
index 7f55de307a4..37fbcb998d3 100644
--- a/packages/dnb-eufemia/src/extensions/forms/Field/PhoneNumber/PhoneNumber.tsx
+++ b/packages/dnb-eufemia/src/extensions/forms/Field/PhoneNumber/PhoneNumber.tsx
@@ -6,7 +6,7 @@ import countries, { CountryType } from '../../constants/countries'
 import StringField, { Props as StringFieldProps } from '../String'
 import FieldBlock from '../../FieldBlock'
 import { useDataValue } from '../../hooks'
-import { FieldHelpProps, FieldProps } from '../../types'
+import { FieldHelpProps, FieldProps, JSONSchema } from '../../types'
 import { pickSpacingProps } from '../../../../components/flex/utils'
 import SharedContext from '../../../../shared/Context'
 import {
@@ -103,12 +103,21 @@ function PhoneNumber(props: Props) {
     []
   )
 
+  const schema = useMemo<JSONSchema>(
+    () =>
+      props.schema ?? {
+        type: 'string',
+        pattern: props.pattern,
+      },
+    [props.schema, props.pattern]
+  )
   const defaultProps: Partial<Props> = {
+    schema,
     errorMessages,
   }
   const preparedProps: Props = {
-    ...defaultProps,
     ...props,
+    ...defaultProps,
     validateRequired,
     fromExternal,
     toEvent,
@@ -133,7 +142,6 @@ function PhoneNumber(props: Props) {
     disabled,
     width = 'large',
     help,
-    pattern,
     required,
     validateInitially,
     continuousValidation,
@@ -349,7 +357,6 @@ function PhoneNumber(props: Props) {
           width={omitCountryCodeField ? 'medium' : 'stretch'}
           help={help}
           required={required}
-          pattern={pattern}
           errorMessages={errorMessages}
           validateInitially={validateInitially}
           continuousValidation={continuousValidation}
diff --git a/packages/dnb-eufemia/src/extensions/forms/Field/PhoneNumber/__tests__/PhoneNumber.test.tsx b/packages/dnb-eufemia/src/extensions/forms/Field/PhoneNumber/__tests__/PhoneNumber.test.tsx
index b8f39f321a9..2f617ed43c2 100644
--- a/packages/dnb-eufemia/src/extensions/forms/Field/PhoneNumber/__tests__/PhoneNumber.test.tsx
+++ b/packages/dnb-eufemia/src/extensions/forms/Field/PhoneNumber/__tests__/PhoneNumber.test.tsx
@@ -1,9 +1,9 @@
 import React from 'react'
 import { wait, axeComponent } from '../../../../../core/jest/jestSetup'
-import { fireEvent, render } from '@testing-library/react'
+import { fireEvent, render, waitFor } from '@testing-library/react'
 import userEvent from '@testing-library/user-event'
 import { Provider } from '../../../../../shared'
-import { Field, Form, JSONSchema } from '../../..'
+import { Field, Form, FormError, JSONSchema } from '../../..'
 
 describe('Field.PhoneNumber', () => {
   it('should default to 47', () => {
@@ -481,10 +481,10 @@ describe('Field.PhoneNumber', () => {
     ).not.toBeInTheDocument()
   })
 
-  it('should handle "pattern" property', async () => {
+  it('should handle simple "pattern" property', async () => {
     render(
       <Provider locale="en-GB">
-        <Field.PhoneNumber required pattern="^[49]+" />
+        <Field.PhoneNumber pattern="^\+47 [49]+" />
       </Provider>
     )
 
@@ -497,7 +497,7 @@ describe('Field.PhoneNumber', () => {
 
     expect(document.querySelector('[role="alert"]')).toBeInTheDocument()
     expect(document.querySelector('[role="alert"]').textContent).toContain(
-      'valid number'
+      'You must enter a valid number'
     )
 
     await userEvent.type(numberElement, '{Backspace>8}89')
@@ -522,6 +522,64 @@ describe('Field.PhoneNumber', () => {
     ).not.toBeInTheDocument()
   })
 
+  it('should handle "pattern" property with country code', () => {
+    const props = {
+      validateInitially: true,
+      pattern:
+        '((?=\\+47)^\\+47 [49]\\d{7}$)|((?!\\+47)^\\+\\d{2} \\d{6})',
+    }
+    const { rerender } = render(
+      <Field.PhoneNumber value="+47 99999999" {...props} />
+    )
+
+    expect(
+      document.querySelector('[role="alert"]')
+    ).not.toBeInTheDocument()
+
+    rerender(<Field.PhoneNumber value="+47 9999" {...props} />)
+
+    expect(document.querySelector('[role="alert"]')).toBeInTheDocument()
+
+    rerender(<Field.PhoneNumber value="+41 999999" {...props} />)
+
+    expect(
+      document.querySelector('[role="alert"]')
+    ).not.toBeInTheDocument()
+
+    rerender(<Field.PhoneNumber value="+41 9999" {...props} />)
+
+    expect(document.querySelector('[role="alert"]')).toBeInTheDocument()
+  })
+
+  it('should handle "validator" property with country code', async () => {
+    const validator = jest.fn(() => {
+      return new FormError('some error')
+    })
+
+    render(
+      <Provider locale="en-GB">
+        <Field.PhoneNumber
+          validator={validator}
+          validateInitially
+          value="+41 9999"
+        />
+      </Provider>
+    )
+
+    expect(validator).toHaveBeenCalledTimes(1)
+    expect(validator).toHaveBeenCalledWith('+41 9999', {
+      pattern: 'You must enter a valid number',
+      required: 'You must enter a valid number',
+    })
+
+    await waitFor(() => {
+      expect(document.querySelector('[role="alert"]')).toBeInTheDocument()
+      expect(
+        document.querySelector('[role="alert"]').textContent
+      ).toContain('some error')
+    })
+  })
+
   it('should filter countries list with given filterCountries', () => {
     render(
       <Field.PhoneNumber
diff --git a/packages/dnb-eufemia/src/extensions/forms/Field/PhoneNumber/stories/PhoneNumber.stories.tsx b/packages/dnb-eufemia/src/extensions/forms/Field/PhoneNumber/stories/PhoneNumber.stories.tsx
index 679ffaef5f2..59da09bcab8 100644
--- a/packages/dnb-eufemia/src/extensions/forms/Field/PhoneNumber/stories/PhoneNumber.stories.tsx
+++ b/packages/dnb-eufemia/src/extensions/forms/Field/PhoneNumber/stories/PhoneNumber.stories.tsx
@@ -1,28 +1,41 @@
 import React from 'react'
-import { Field } from '../../..'
+import { Field, Form } from '../../..'
+import { Flex } from '../../../../../components'
 
 export default {
   title: 'Eufemia/Extensions/Forms/PhoneNumber',
 }
 
+const initialData = { phone: '+47 423456789' }
+
 export function PhoneNumber() {
-  const [state, update] = React.useState('+47 1')
-  // const [state, update] = React.useState(undefined)
-  React.useEffect(() => {
-    // update('+41 1')
-    update('+45')
-  }, [])
+  const { update } = Form.useData('uniqueId')
+
+  React.useLayoutEffect(() => {
+    update('/phone', () => '+41 123')
+  }, [update])
+
   return (
-    <Field.PhoneNumber
-      required
-      pattern="^[49]+"
-      value={state}
-      onBlur={console.log}
-      onFocus={console.log}
-      onChange={(value) => {
-        console.log('onChange', value)
-        update(value)
-      }}
-    />
+    <Form.Handler id="uniqueId" data={initialData}>
+      <Flex.Stack>
+        <Field.PhoneNumber
+          pattern="((?=\+47)^\+47 [49]\d{7}$)|((?!\+47)^\+\d{2} \d{6})"
+          // pattern="^\+47 [49]+"
+          // required
+          // validateInitially
+          path="/phone"
+          onBlur={console.log}
+          onFocus={console.log}
+          onChange={(value) => {
+            console.log('onChange', value)
+            update('/phone', () => value)
+          }}
+        />
+        <Field.String label="Shadow" path="/phone" />
+        <Form.ButtonRow>
+          <Form.SubmitButton />
+        </Form.ButtonRow>
+      </Flex.Stack>
+    </Form.Handler>
   )
 }