What are cloud phones for AI agents?.

0:00 Cloud phones for AI agents are real Android phones, hosted in the cloud, that an AI agent controls through an API or an MCP server.

0:09 The agent reads the screen, taps, types and installs apps, with no phone on your desk and no emulator on your machine.

0:18 So why would an agent need a phone? Three reasons.

0:22 First, apps with no API.

0:24 A lot of real work lives inside mobile apps that have no API and no website.

0:30 Second, testing your own app.

0:32 The agent installs the APK it just built, and walks through the screens it changed.

0:37 Third, accounts that stay signed in.

0:39 Sign in once, and the phone keeps the account for the next task.

0:44 How is that different from what you might use today?

0:47 A local emulator with ADB runs on your own machine.

0:50 It needs the Android SDK, and it's hard to run in CI or in a cloud sandbox.

0:57 A device farm rents real devices for scripted test runs, and usually resets them after each session.

1:03 And a virtual phone number gets you calls and texts.

1:05 But a number is not a phone: there's no screen, and no apps.

1:10 A cloud phone for agents is a full Android device, on demand, from wherever your agent runs.

1:17 So how does an agent drive one?

1:19 It's a loop: observe, act, check.

1:23 Observe returns the screen as text: a short, numbered list of every button and field, with its label, plus a screenshot.

1:31 Act taps and types.

1:32 Orders. Reorder.

1:33 Six crates. Place order.

1:36 Then it observes again, to check the result. Order placed.

1:40 And Phonebox never retries a write on its own, so a slow response can't turn into a double order.

1:45 What should you look for in a cloud phone? Four things.

1:49 A hosted MCP server, so any agent can connect with one URL.

1:53 A human handoff: a live view link, for one-time codes and payments.

1:59 Persistence: parked phones that keep their apps and sign-ins.

2:04 And per-second pricing, so you only pay while the phone runs.

2:08 Phonebox is the agent-first cloud phone.

2:10 Claude Code, Codex, Cursor or your own agent connect through MCP, a CLI, an SDK or REST.

2:19 It costs six cents a minute, billed per second.

2:22 Parked phones are free, and an idle phone parks itself after five minutes.

2:27 It's Android only, with no phone number or SMS.

2:30 New accounts get two dollars of free credit, with no card.

2:33 Phonebox.dev.