Timezone
This tool on every surface: CLI · MCP · Python · JavaScript · Go · Java · .NET
Read the device timezone, or change it. These call app_timezone.
Timezone
public string Timezone()
public string Timezone(string tz)
The device timezone.
Changes the device timezone and returns the new one. Takes an IANA
name such as "Asia/Tokyo"; confirmed by reading it back,
since an unknown zone is accepted by the device and ignored. Works
on real hardware, unlike IncomingCall(string) and
Sms(string).
Examples
Move the device to Tokyo time
string zone = device.Timezone("Asia/Tokyo");
The same call from the command line, mobium timezone Asia/Tokyo, printed on an Android 15 emulator:
Asia/Tokyo (was America/Los_Angeles)
| Before | After |
|---|---|
![]() | ![]() |
mobium timezone Asia/Tokyo on an Android 15 emulator

