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Block wifi signal4/29/2023 ![]() However, cases with metal or magnetic clips might harm the quality of phone signal. Phone cases typically don’t interfere with phone signal. Your phone casing is a life saver! But is it impeding reception? A Blessing or A Curse? They don’t worry about sitting on their device and cracking its screen or dropping the phone from a considerable height only to pick up the pieces. It’s because of cell phone cases that users don’t worry about water / coffee spill damage. This happens all the time, isn't engineering great.Like Smartphone technology, cell phone cases and covers make life easier by protecting our device from accidental damage. Quite often a real world experiment will give different results to the science backing the accepted answer. In my case it is not negligible, and makes the difference between watching video, and watching a spinning icon. "Generally, the amount of impedance added by the door is a negligible amount and would not be sufficient to noticeably improve the quality of the signal." So, the numbers shown above, although probably quite accurate and scientifically measured. I get small bursts of video followed by minutes of buffering. I have even tried it with the doors closed over a good 30 minute period. Video can be streaming in HD beautifuly, if I go downstairs and close the kitchen door and then the bedroom door, within 5 seconds the video is buffering. ![]() ![]() But I have repeated this experiment on several different days, at different times of day, and it always yields the same result. Perhaps it is just a coincidence? I thought. I have watched whole films and shows without any issue. If I open the bedroom door, and the kitchen door where the router lives, it NEVER buffers. (side note, but my phone picks up full wifi signal). Chromecast even grumbled that the wifi signal was weak and recommended using a different connection. If I try to stream video on Chromecast in my bedroom with the bedroom door closed, it intermittently buffers. The floors in my house are wooden, the walls are stone, the cielings are high and the doors are solid wood. The bedroom is one floor above the router, and one room adjacent. And beyond an obligatory note that decibels (dB) are not directly additive or subtractive in the mathematical sense, this calculation is also a bit involved so I'm not attempting to summarize it here either. There's quite a bit of variability involved, so I won't attempt to summarize it here.Īnd this vendor link goes into the calculations involved in trying to more quantitatively identify the effects of signal attenuation. This SuperUser question goes into some detail about understanding the power output from wireless routers. ![]() I used Internet archive links as I wasn't able to find current links for either source. Interior Office Door w/Window 1.75"/0.5" 4 dBĮxterior Double Pane Coated Glass 1" 13 dB That's likely due to the wide variety of framing and construction materials that can reasonably be seen for floor construction. It's worth pointing out that they don't provide any attenuation measurements for differing floor types. Source data is courtesy of 3COM and the Internet Archive and was also linked from and the Internet Archive. Especially since it's unlikely that there is a direct line of sight between the computer and the wireless router.īecause we like numbers, I dug a bit further to identify some common sources of attenuation. More than likely though, there are other structural elements that are having a more significant impact on the quality of the wireless signal. Given a computer right at the edge of receiving a reliable signal and being blocked by a steel door, and there is an otherwise direct line of site to the router except for the door, then it might be possible to improve signal reception by opening the door. A steel door would provides the most at 11 dB. A solid core, wooden door will present more impedance at 6 dB. A hollow core, wooden door won't impede the signal all that much at 4 dB. That said, differing types of door construction have differing impacts on the signal. Generally, the amount of impedance added by the door is a negligible amount and would not be sufficient to noticeably improve the quality of the signal. Maybe, but probably not to a noticeable degree.Īll structures, including doors, impede the wireless signal from the router by some amount. Can the wifi signal from the router to the computer be improved by opening a door to the room where the computer is?
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