Scenario 1: Lag or stuttering before disconnect — unstable network

If you notice screen delay or stutter before the connection drops, the issue is most likely caused by poor network conditions.

1. Cause analysis:

Wireless casting relies on stable network transmission. Weak Wi-Fi signal, channel congestion, or insufficient bandwidth can easily interrupt data transfer.

2. Solution:

Switch to wired casting (such as using an HDMI cable or a Type-C to HDMI adapter) to bypass wireless network limitations and greatly improve stability.

Connection steps:

·         Connect one end of the cable to your phone (or adapter)

·         Connect the other end to the TV/monitor’s HDMI port

·         No network required for stable casting

Scenario 2: App shows splash screen after disconnect — app process was killed

If the casting app shows its startup logo after reconnecting, the system likely terminated the app process. Check the following:

Case 1: System reclaimed the app due to low memory

If your phone has 8GB RAM or less and multiple apps (games, video, social apps, etc.) are running simultaneously, the system may automatically close inactive casting apps under memory pressure.

Recommended actions:

·         Close unnecessary apps while casting

·         Free up background memory/cache

·         If you frequently multitask, consider upgrading to a device with more RAM

Case 2: Background permissions not properly enabled

If memory is not the issue, verify that key permissions for the casting app are enabled:

Background activity permission

Path:
Settings → Apps → [Your casting app] → Battery / Startup management
Make sure the following are enabled:

·         Allow background activity

·         Allow auto-start

·         Allow associated start

Overlay (floating window) permission

Path:
Settings → Apps → [Your casting app] → Display over other apps
Enable Allow display over other apps

After completing the settings, restart your phone and casting device, then try casting again.