Overview

This article outlines why the “Working Hours” feature (scheduled power on/off) might be unavailable on the majority of Android devices. It also covers how scheduling on/off and sleep modes are handled across different platforms such as Windows, Linux, Tizen, and webOS. If you are looking to enable scheduled power operations on Android, this article explains what is supported, what is not, and provides guidance for manufacturers.

Symptoms / Description

• You do not see the “Working Hours” (scheduled power on/off) option in Displayforce Platform on your Android device configuration.
• Attempting to use scheduled tasks like auto power on, auto shutdown, or sleep mode fails.
• You notice other platforms (e.g., Windows, Linux x86_64, Tizen, webOS) successfully support power scheduling, but Android devices do not.

Cause / Background

1. Android Hardware & Firmware Limitations

   • Almost all Android devices do not support any standardized power on/off scheduling through their motherboard, CPU, or firmware.
   • No official Android API exists for implementing scheduled on/off at the hardware level.

2. Lack of OS-Level Support

   • Power scheduling on Android would require deep system-level hooks or an API from the device manufacturer.
   • Most Android devices do not provide any official API or interface to control device power states.

3. Device-Specific Exceptions

   • Certain devices, like DISPL Box v1, have custom firmware and hardware that do support scheduled power on/off.
   • These devices are an exception and are automatically recognized by Displayforce Platform if the hardware supports it.

Platforms Comparison

Steps to Verify / Troubleshoot

1. Confirm Device Capabilities

   • If you are on Android, check the device manual or contact the device manufacturer. Ask specifically about power scheduling or “Wake Timers.”
   • Most Android devices will not support this feature unless explicitly stated.

2. Manufacturer Support Request

   • If you require power scheduling on an unsupported Android device, ask the manufacturer for a API or any interface that can control the device’s power timings.

What to Do If Your Android Device Does Not Support Power Scheduling

1. Feature Will Be Hidden

   • If “Working Hours” is not supported, Displayforce Manager automatically hides the scheduling menu.

2. Check for Updates

   • Occasionally, manufacturers might release firmware updates with new features. Keep your device up to date, although this is rare for power scheduling.

3. Contact Manufacturer

   • Provide a clear request:

     “Please send to us a API which could be used to control on/off device power timings (scheduling).”

   • If the manufacturer confirms support, share that information with the Displayforce team for a possible feature request.