diff --git a/README.md b/README.md
index da726c3c..7919038f 100644
--- a/README.md
+++ b/README.md
@@ -2054,6 +2054,25 @@ test the end of a restriction. `--from-session OTHER_TEST_NUMBER` sends a real s
 another Test number in the project instead, producing an ordinary
 `message.received` event you can reply to. Use `--json` for one JSON document.
 
+## Test number phone
+
+Each Test number has a simulated phone that acts as its main device. These
+commands read it, send a text as the phone to another running Test number in
+the project, and unlink a device as a person would from Linked devices. Device
+0 is the phone itself and cannot be unlinked. They require a server API key
+with `sandbox:read` for `get` and `sandbox:write` for `send` and `unlink`, and
+Test numbers access. Phone sends share the 30-per-minute project limit with
+test events.
+
+```shell
+polymorfa testing phone get --project PROJECT_ID --session my-test-number
+polymorfa testing phone send --project PROJECT_ID --session my-test-number \
+  --to +15550100002 --text "hello from the phone"
+polymorfa testing phone unlink --project PROJECT_ID --session my-test-number --device 74
+```
+
+Use `--json` for one JSON document.
+
 ## Local MCP tools
 
 The package includes a standards-based stdio MCP server for Codex and Claude:
diff --git a/src/commands/testing/phone/get.ts b/src/commands/testing/phone/get.ts
new file mode 100644
index 00000000..77b87c17
--- /dev/null
+++ b/src/commands/testing/phone/get.ts
@@ -0,0 +1,27 @@
+import {BaseCommand} from '../../../base-command.js'
+import {phoneTarget, sessionFlag} from '../../../testing-phone.js'
+
+export default class TestingPhoneGet extends BaseCommand {
+  static override description =
+    "Show a Test number's simulated phone: whether it is online and which devices are linked."
+  static override examples = [
+    '<%= config.bin %> testing phone get --session my-test-number --project <projectId>',
+  ]
+  static override flags = {session: sessionFlag}
+  async run(): Promise<void> {
+    const {flags} = await this.parse(TestingPhoneGet)
+    const {project, session} = phoneTarget(flags)
+    const client = await this.messagingClient(flags, {
+      serverApiKeyOnly: 'Testing phone',
+    })
+    const response = await client.testing.getPhone(project, session)
+    const phone = response.data
+    const devices = phone.devices.map((device) => device.deviceId).join(', ')
+    this.writeValue(
+      {data: phone, metadata: response.metadata},
+      `${phone.session} ${phone.phone}: phone ${phone.online ? 'online' : 'offline'}\n` +
+        `Linked devices: ${devices || 'none'}`,
+      flags,
+    )
+  }
+}
diff --git a/src/commands/testing/phone/send.ts b/src/commands/testing/phone/send.ts
new file mode 100644
index 00000000..ddfd0fe9
--- /dev/null
+++ b/src/commands/testing/phone/send.ts
@@ -0,0 +1,37 @@
+import {Flags} from '@oclif/core'
+import {BaseCommand} from '../../../base-command.js'
+import {phoneTarget, sessionFlag} from '../../../testing-phone.js'
+
+export default class TestingPhoneSend extends BaseCommand {
+  static override description =
+    "Send a text from a Test number's phone to another running Test number in the project."
+  static override examples = [
+    '<%= config.bin %> testing phone send --session my-test-number --to +15550100002 --text "hello" --project <projectId>',
+  ]
+  static override flags = {
+    session: sessionFlag,
+    to: Flags.string({
+      description: 'Another Test number in the project, in E.164 format.',
+      required: true,
+    }),
+    text: Flags.string({description: 'Message text.', required: true}),
+  }
+  async run(): Promise<void> {
+    const {flags} = await this.parse(TestingPhoneSend)
+    const {project, session} = phoneTarget(flags)
+    const client = await this.messagingClient(flags, {
+      serverApiKeyOnly: 'Testing phone',
+    })
+    const response = await client.testing.sendPhoneMessage(project, session, {
+      to: flags.to,
+      text: flags.text,
+    })
+    const sent = response.data
+    this.writeValue(
+      {data: sent, metadata: response.metadata},
+      `Sent from ${sent.session}'s phone to ${sent.to}` +
+        (sent.messageId ? ` (${sent.messageId}).` : '.'),
+      flags,
+    )
+  }
+}
diff --git a/src/commands/testing/phone/unlink.ts b/src/commands/testing/phone/unlink.ts
new file mode 100644
index 00000000..e4684704
--- /dev/null
+++ b/src/commands/testing/phone/unlink.ts
@@ -0,0 +1,37 @@
+import {Flags} from '@oclif/core'
+import {BaseCommand} from '../../../base-command.js'
+import {phoneTarget, sessionFlag} from '../../../testing-phone.js'
+
+export default class TestingPhoneUnlink extends BaseCommand {
+  static override description =
+    "Unlink a device from a Test number's phone, as from Linked devices on a phone. Device 0 is the phone and cannot be unlinked."
+  static override examples = [
+    '<%= config.bin %> testing phone unlink --session my-test-number --device 74 --project <projectId>',
+  ]
+  static override flags = {
+    session: sessionFlag,
+    device: Flags.integer({
+      description: 'Linked device ID, as shown by testing phone get.',
+      min: 1,
+      max: 99,
+      required: true,
+    }),
+  }
+  async run(): Promise<void> {
+    const {flags} = await this.parse(TestingPhoneUnlink)
+    const {project, session} = phoneTarget(flags)
+    const client = await this.messagingClient(flags, {
+      serverApiKeyOnly: 'Testing phone',
+    })
+    const response = await client.testing.unlinkPhoneDevice(
+      project,
+      session,
+      flags.device,
+    )
+    this.writeValue(
+      {data: response.data, metadata: response.metadata},
+      `Unlinked device ${response.data.deviceId} from ${response.data.session}'s phone.`,
+      flags,
+    )
+  }
+}
diff --git a/src/testing-phone.ts b/src/testing-phone.ts
new file mode 100644
index 00000000..4c5346a7
--- /dev/null
+++ b/src/testing-phone.ts
@@ -0,0 +1,27 @@
+import {Flags} from '@oclif/core'
+import {PolymorfaConfigurationError} from '@polymorfa/sdk'
+
+export const sessionFlag = Flags.string({
+  description: 'Test number session name in the project.',
+})
+
+/** The project and Test number every phone command acts on. */
+export function phoneTarget(flags: {
+  project?: string | undefined
+  session?: string | undefined
+}): {
+  project: string
+  session: string
+} {
+  if (!flags.project)
+    throw new PolymorfaConfigurationError(
+      'Select a project with --project.',
+      'project',
+    )
+  if (!flags.session)
+    throw new PolymorfaConfigurationError(
+      'Select the Test number with --session.',
+      'session',
+    )
+  return {project: flags.project, session: flags.session}
+}
diff --git a/test/commands/testing/phone.test.ts b/test/commands/testing/phone.test.ts
new file mode 100644
index 00000000..a35a9f59
--- /dev/null
+++ b/test/commands/testing/phone.test.ts
@@ -0,0 +1,101 @@
+import {runCommand} from '@oclif/test'
+import {expect, test} from 'vitest'
+import {
+  startHttpSequenceServer,
+  withEnvironment,
+} from '../../helpers/http-server.js'
+
+const projectId = '11111111-1111-4111-8111-111111111111'
+const apiKey = `pmfa_${'A'.repeat(72)}`
+const base = `/messaging/testing/${projectId}/numbers/test-a/phone`
+
+async function run(
+  command: string,
+  responses: Parameters<typeof startHttpSequenceServer>[0],
+) {
+  const server = await startHttpSequenceServer(responses)
+  try {
+    const result = await withEnvironment(
+      {
+        POLYMORFA_API_KEY: apiKey,
+        POLYMORFA_BASE_URL: server.baseUrl,
+        POLYMORFA_CLIENT_TOKEN: undefined,
+        POLYMORFA_PROJECT_TOKEN: undefined,
+      },
+      () => runCommand(command),
+    )
+    return {result, requests: server.requests}
+  } finally {
+    await server.close()
+  }
+}
+
+test('shows the phone and its linked devices', async () => {
+  const {result, requests} = await run(
+    `testing phone get --project ${projectId} --session test-a`,
+    [
+      {
+        status: 200,
+        body: {
+          session: 'test-a',
+          phone: '+15550100001',
+          online: true,
+          devices: [{deviceId: 33}, {deviceId: 74}],
+        },
+      },
+    ],
+  )
+  expect(result.error).toBeUndefined()
+  expect(result.stdout).toContain('test-a +15550100001: phone online')
+  expect(result.stdout).toContain('Linked devices: 33, 74')
+  expect(requests.map(({method, url}) => `${method} ${url}`)).toEqual([
+    `GET ${base}`,
+  ])
+})
+
+test('sends a message from the phone and prints JSON', async () => {
+  const sent = {session: 'test-a', to: '+15550100002', messageId: '3EB0AA'}
+  const {result, requests} = await run(
+    `testing phone send --project ${projectId} --session test-a --to +15550100002 --text hello --json`,
+    [{status: 202, body: sent}],
+  )
+  expect(result.error).toBeUndefined()
+  expect((JSON.parse(result.stdout) as {data: unknown}).data).toEqual(sent)
+  expect(requests[0]!.method).toBe('POST')
+  expect(requests[0]!.url).toBe(`${base}/messages`)
+  expect(JSON.parse(requests[0]!.body)).toEqual({
+    to: '+15550100002',
+    text: 'hello',
+  })
+})
+
+test('unlinks a device', async () => {
+  const {result, requests} = await run(
+    `testing phone unlink --project ${projectId} --session test-a --device 74`,
+    [{status: 200, body: {session: 'test-a', deviceId: 74, unlinked: true}}],
+  )
+  expect(result.error).toBeUndefined()
+  expect(result.stdout).toContain("Unlinked device 74 from test-a's phone.")
+  expect(requests.map(({method, url}) => `${method} ${url}`)).toEqual([
+    `POST ${base}/devices/74/unlink`,
+  ])
+})
+
+test('refuses device 0 before any request', async () => {
+  const {result, requests} = await run(
+    `testing phone unlink --project ${projectId} --session test-a --device 0`,
+    [],
+  )
+  expect(result.error).toBeDefined()
+  expect(requests).toHaveLength(0)
+})
+
+test('asks for the Test number', async () => {
+  const {result, requests} = await run(
+    `testing phone get --project ${projectId}`,
+    [],
+  )
+  expect(result.error).toBeDefined()
+  expect(result.stderr).toContain('--session')
+  expect(requests).toHaveLength(0)
+})