Dear developers of Hongjiayuan Communication Technology Co., Ltd.
Phone users in THL 2015 ask you to correct problems found in the model.
Namely :
1. Please consider to upgrade Android OS for THL 2015 to version 5 (Lollipop).
2. Fix the problem with Noise Reduction in camera.
3. Optimize CPU working.
4. Find a way to optimize battery usage by reducing of power consumption in sleep modes, network communications etc.

The world community is the owner of the phone thl 2015 looks to be heard. And you released an update to correct deficiencies.