A free Android app called Mika lets users give a single plain-language instruction, then carries it out by operating their installed apps on a hidden background screen while the user keeps using the phone.
Mobile AI agents · Mika Android app
One sentence, one hidden screen: how Mika runs phone tasks while you keep using your phone
A free Android app that takes a single plain-language instruction and carries it out by operating your installed apps on a background screen you cannot see.
1
plain-language sentence to start a task
Free
consumer app available at no cost
Background
agent works on a screen you cannot see
How a task flows
From instruction to completed task
1. Instruct
User gives one sentence
→
2. Open apps
Relevant apps run on a hidden background screen
→
3. Act like a person
Taps, types and scrolls inside each app
→
4. Task done
Your main screen was never taken over
Key point: the user can keep using the phone while the task runs, unlike tools that control the main display and block other activity.
The promise
Works from one plain sentence
Uses existing apps that were never built for automation
Background operation leaves the main screen free
Extends agent-style control from desktops to everyday mobile tasks
The open questions
Multi-step reliability has not been independently tested
Handling of logins, payments and app updates is unconfirmed
Such systems can break when interfaces change or layouts are unusual
Permissions and data access raise privacy questions
What decides whether Mika matters
A free app that runs everyday phone tasks from one sentence is a clear signal of where agent technology is heading. Three conditions will determine whether it becomes a practical daily tool.
Reliability
Completes multi-step tasks consistently across app updates
Transparency
Clear disclosure of what permissions and data it accesses
Sensitive actions
Careful handling of logins, payments and other high-stakes steps
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