Problem causes:
1. The quality of the secondary WiFi network is poor and the network speed is slow;
2. The main WiFi network speed is already very fast;
3. The application used is not a dual WiFi whitelist application;
4. The scenario used is a single task and a single data stream.
Solution：
1. Remove the hotspots with poor network quality, and do not use hotspots with poor network quality for secondary WiFi;
2. If the main WiFi network speed has exceeded 6MB/s, you can not use the dual WiFi function;
3. Non-whitelisted applications cannot use the dual WiFi function to accelerate. View dual WiFi whitelist applications: Settings > Wi-Fi > Wi-Fi Assistant > Dual Wi-Fi acceleration > Apps that Support network acceleration.
4. A single data stream cannot be accelerated by the dual WiFi function. It is recommended to try multi-tasking scenarios, such as enabling downloading software and downloading files at the same time.
Related articles:
How to set Dual Wi-Fi acceleration