Acer Liquid C1 JB 4.1.2 bugs/errors report

My last thread tell you, that we dont have any official OS image provided by Acer, nor a tool to flash OS image from a PC. And the worst part, they will charge us 16 dollars to reflash factory image if we rooted our phone, or warranty got expired.
Wonderfull,,,,they will become rich quickly.

Maybe this is why developers stay away from this phone maker

Here is a list of bugs that I found in JB 4.1.2 update :

- there is no face unlock. Removed in JB.
- launcher seems lag alot. Sometime show blank image, then back to normal again.
- some google apps are frozed and unuseable. Waste system partition space.
- camera sometimes showing black preview. But still could capture an image. Sometimes hang, and not responding.
- camera led sometimes blinking when capturing a video with led flash on.
- this is not a bug, just to tell you that looks like JB update was just a quick and unoptimized update. Its provided as is, not for consumers satisfied.

Please report another bug if you found it. I will list them.

Maybe Acer will look into this, or maybe not. At least I will keep this phone for 3years warranty without root. And stop my app development project that need root access.