Device periodically locks with keyguard/PIN screen on Android 14

Android

Your device may periodically display a keyguard or PIN lock screen on Android 14 Telpo C9D hardware, even without a deliberate lock action. This article explains the issue and how to resolve it.

Before you begin

This issue affects:

Telpo C9D devices
Android 14 (build K1DN_A14_V1.0.6_202605141155 or similar)
Devices with numeric PINs under Blueprint password quality policies

If your device locks periodically every few days to a week and you see a DEVICE_ADMIN_ALERTS notification on-device about insufficient password, follow these steps.

How to update your Esper Agent

Update to Esper Agent v12.0.4180 or later. Choose one of the following methods:

Method 1: Update a single device via the Esper Console

In the Esper Console, go to Devices & Groups.
Select your device.
Go to the Apps tab.
Find Esper Agent and update it to v12.0.4180 or later.

Method 2: Update via Blueprint

In the Esper Console, go to Blueprints.
Select your Blueprint.
Go to Apps → Esper Agent.
Set the version to v12.0.4180 or later.
Apply the Blueprint to your affected devices.

How to monitor your device after the update

After updating the Esper Agent, monitor your device for 7–10 days (matching the typical lock interval).
Check that the DEVICE_ADMIN_ALERTS notification is no longer present on-device.
Verify that the device does not enter keyguard state without a deliberate lock action.

What to do if the device locks again

If your device continues to lock periodically after updating to Esper Agent v12.0.4180:

Capture an Android bug report from the affected device as soon as possible after a lock event occurs. This requires physical access to the device.
Gather the following information:
- The Android bug report file
- Esper Agent logs from the Esper Console around the time of the lock event
- Confirmation of your exact Esper Agent version at the time of the lock
Contact Esper Support and provide all three items above so we can investigate further.

Still need help?

If these steps do not resolve your issue, or if you need assistance capturing a bug report or gathering logs, submit a support ticket. include details about your device model, Android build version, and when the locks occur.