weird noise in camera apps

No idea if its normal, but I keep hearing this strange noise, almost like the shutter is turning on or opening, whenever I open up an app that uses the camera. don't really see any actual performance issues, but it's a weird noise.

weird fan like noise on camera app

Hi,
I have a LG-H818P and a couple of days now that on occasion, when I open the camera app it starts hissing and sometimes I feel a light vibration like if it had a laptop fan in it. I thought it was some issue in the Manual mode, but I can't replicate the problem. It happens randomly, but only when I open the camera.
Has anyone had this problem before? The phone hasn't overheated or behaved in any abnormal way aside from this "fan like" vibration and noise.
Thanks,

Pop noise when receiving a Notification

I just got my moto x Pure a few days ago and i noticed when i receive a text message i get this pop noise after the notification sound stops playing. I went in the settings to change the notification sound and as im switching between them they all have a pop noise always after there done playing or sometimes before playing. If i try to change the ring tone it doesn't happen, they start and end fine with no pop noise. I remember having a similuar issue with my nexus 4 and to remedy the situation i would disable touch sounds and vibration but it doesnt seem to help with this phone.

Someone on reddit said he had the same issue. Anyone else experience this ?

Tf701T Headphone jack noise

cpu noise/static headphones
I'm having an issue with my tf701t when I use headphones in a quiet room. I can hear a constant buzzing. No audio playing and it changes frequency with the cpu load (launching apps, touching the screen) . I've tried different headphones/speakers all produce this awful noise.

I've rma'd this tablet four times now and the noise is still there... They have replaced the headphone jack, motherboard,ribbon cable and just replaced the entire tablet. They said they could not reproduce the audio issue I am having and sent me a video showing that in fact they couldn't reproduce the issue......:eek:

Maybe someone knows how I could make it work properly like they have, possibly different cable?
Here is my video showing the noise I hear: sorry can't post links

dropbox dot com/s/qi5zxq2k4rfjm2m/20150507_222141 dot mp4?dl=0

Here is there video showing no noise: sorry can't post links
asuswebstorage dot com/navigate/s/80350C53A8D14AC7A9EE74B6FF18DEBFY[/url]

Moto g 2015 back cover produces clicking noise??

I have moto g 2015 16gb variant and when I apply little or medium pressure at back then it creates clicking noise ,I want to know if anyone of you having this problem and whether this will affect the water resistant or not since back is not properly fit, please confirm it !!!