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Questions tagged [mobile-phones]

A device that can make and receive telephone calls over a radio link whilst moving around a wide geographic area.

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1answer
154 views

How can a call use cellular service when cellular service is off in Airplane Mode? [on hold]

According to Verizon (a large company generally positioned to be a trusted source of knowledge for how cellular phones and cellular networks work): When using Wi-Fi Calling, 911 calls will always ...
31
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1answer
2k views

Does radiation from sleeping next to your smartphone affect your brain patterns negatively?

Vivian Giang writes in Sleep Drives Metabolite Clearance from the Adult Brain: In fact, as part of Swart’s Neuroscience For Leadership class at MIT in April, she discussed the serious health ...
23
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1answer
2k views

Does 5G pose health risks?

Among others, the website RadiationHealthRisks claims: Second, according to experts, because of the shorter length of millimeter waves (MMV) required by 5G to support the bandwidth, these ...
82
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6answers
8k views

Do mobile phones have anything to do with brain cancer?

Is there evidence for a correlation between the use of mobile phones and the occurence of brain cancer? If yes, is there also evidence for causality?
6
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1answer
671 views

Is using a phone while driving more dangerous than driving while drunk?

There have been numerous studies that show how using a phone while driving is more distracting than other non-driving tasks and even worse than driving while intoxicated. Here was a study done in the ...
6
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1answer
785 views

Have people died by being shocked through the headphone cord of their cell phone?

The headline of an article in Vice magazine claims that "A 16-Year-Old Has Died After Being Electrocuted by His Headphones" Last week, a teenager was electrocuted to death while listening to ...
5
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1answer
872 views

Was iOS twice as memory-efficient as Android?

John Brownlee wrote, in 2014, on Cult of Mac: iOS is twice as memory-efficient as Android [...] As it turns out, an iPhone 6 with 1GB of RAM runs much faster than a similarly specced ...
3
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1answer
290 views

Does the Wowfixit screen protector harden phone screens?

The WOWFIXIT web-page offers a product where you wipe a liquid over your phone screen and polish it. They claim the result will make your protect your phone screen from scratches: One of the many ...
14
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1answer
2k views

Could the Nokia 1100 be hacked to sniff SMS messages intended for third parties?

TL; DR; version: Is it possible that hackers were somehow able to "reprogram" a specific Nokia 1100 phone to make it receive SMS messages sent to another person's phone number? A couple of years ago, ...
11
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0answers
7k views

Does a mobile plugged in to the charger produce more EM radiation?

I've been hearing this a lot lately, but I can't seem to find anything to disprove (or prove) this claim. I know that a weak signal means the phone produces more radiation (which makes sense), but a ...
2
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0answers
699 views

Is it safe for a child to sleep near a baby monitor?

I have always assumed baby monitors and all wireless technology to be completely safe and have been informed by a 'friend' that I have been endangering my children by using them. We used an RF ...
6
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1answer
977 views

Do protective covers for mobile phones offer significant protection from serious physical damage?

Simple question, would those costly silicon and plastic covers protect my phone from damages if it were to fall to the ground? Due to commenters request - let's limit the question to iPhone covers ...
18
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1answer
836 views

Does fully discharging a Lithium-based battery reduce its lifespan?

According to Battery University, the less you allow a Lithium-based battery to discharge before charging it again, the less wear it will undergo and therefore the longer lifespan it will have. (e.g. ...
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2answers
8k views

Are cell phones dangerous to use at the gas station?

All over the world there are signs similar to this, is there the slightest bit of support for the danger of using a cell phone at the gas station? Related to: Are personal electronics a risk to ...
21
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1answer
1k views

Is talking and driving more dangerous than any other type of distraction?

Are there any studies that demonstrate that talking on a cell phone is more dangerous than any other type of distraction? Yes, it seems clear that talking on a cell phone is a distraction, but for ...
11
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2answers
977 views

Do reverse phone lookup services work?

This morning I received a phone call from an unknown caller. I punched the number in Google to see if any hits came up. Unfortunately all I got was the long list of services that show up promising to ...
2
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0answers
326 views

Could a tattoo encode a wave form to reproduce significant sound sample? [closed]

I just ran into https://skinmotion.com/ which sells "Soundwave Tattoos". My gut says tattoos cannot have high enough resolution to actually encode 15s of audio - even at speech quality. Reading all ...
16
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1answer
2k views

Do elevators increase radiation from cell phone use?

Literally every elevator I’ve been in during my stay in Israel has a sign which says that cell phone use is prohibited - not because of disturbing other passengers, or because the metal car blocks the ...
9
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1answer
609 views

Do wifi and cellphones increase the risk of miscarriage?

Over the past few days, a whole bunch of news articles have claimed that WiFi and cellphone signals increase a pregnant woman's miscarriage risk. Some examples: "WiFi and mobile phones could increase ...
7
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0answers
535 views

Did a woman go blind playing a mobile game?

This articles states: http://www.telegraph.co.uk/news/2017/10/06/chinese-woman-blinded-one-eye-playing-game-likened-electronic/ The 21-year-old woman suddenly lost sight in her right eye after ...
2
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1answer
924 views

Does charging a phone use the same power as a washing machine? [closed]

I heard that charging a phone is the same as running a washing machine in terms of electricity but from what I understand a typical phone charger uses ~5W whereas a washing machine is near ~500W. ...
2
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0answers
54 views

Do cellphones damage male fertility? [duplicate]

According to this article wearing cellphones in the front pocket can cause men lose their fertility. Men using a cellular phone for more than one hour a day double the risk of their sperm count ...
18
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2answers
5k views

Does wifi stunt cress growth?

A couple of weeks ago there were reports of an experiment by schoolchildren that appears to demonstrate that wifi router radiation adversely affects cress. There's been time now for the leading ...
25
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1answer
31k views

Does home-WiFi expose you to less radiation than using the 3G on your cell-phone?

Are there any studies that compare WiFi and cellular data usage, in the home, over time? Mainly I've heard that WiFi uses more battery (so it should emit more radiation) but OTOH it feels like 3G/...
4
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1answer
420 views

Do 48% of women in the Arab world not own a mobile phone?

In this 2016 Emirate News article, Kailash Satyarthi is quoted as saying: Today, women are rising, but this is happening only where they have access to education. Young girls in the MENA region are ...
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0answers
76 views

Are cell phones harmful to male fertility if kept in trousers pocket? [duplicate]

Several studies or press articles suggest that keeping a cell phone in a male's trousers pocket (and cell phone usage in general) may harm that men's fertility (increase sperm issues): http://www....
5
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1answer
302 views

Are people more careless with their mobile phones when an upgrade is due?

Gizmodo reports from an article in the Journal of Marketing Research that People Trash Their Phones When an Upgrade is Close The report describes the study further, noting that thee effect is ...
25
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2answers
20k views

Can mobile phones be tracked when they're switched off?

Seeing as mobile phones aren't sending signals when switched off, is it possible to track a mobile phone when it's switched off? NSA growth fueled by need to target terrorists By September ...
7
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1answer
2k views

Are the methods and conclusions of the study “Clear connection between wireless devices and cancer, experts say” sound?

The article, no longer linked at Science Daily, by is summarized: A metabolic imbalance caused by radiation from your wireless devices could be the link to a number of health risks, such as various ...
8
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2answers
586 views

Do cell phones relay their locations to emergency services?

I just saw this YouTube video warning about the inaccuracy of cell-phones in relating their location to 9-11 dispatchers: while it's true that modern cellphones can relay locations back to your 911 ...
2
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0answers
101 views

Are low SAR phones better for health than high SAR phones? [duplicate]

Each device will have a different SAR value and follow this side https://www.rfsafe.com/samsung-cell-phones-rated-lowest-radiation-cell-phones/ they have say low SAR phone better than high SAR phone ...
8
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2answers
859 views

Can cell phones be remotely converted into listening devices?

This is one of the statements of Richard Stallman in his homepage as an explanation of why he doesn't own a cell phone: Cell phones are tracking and surveillance devices. They all enable the ...
6
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2answers
2k views

Was text messaging originally developed for deaf people?

I just heard this claim in this TED talk by Elise Roy (at about the 5:24 mark in the transcript): Text messaging: that was originally designed for people who are Deaf. Is it true?
5
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0answers
611 views

Is the NSA installing surveillance codes in iPhones by calling Sprint customers?

I've got a iPhone 6s on the EE network. Today I got a SMS from +44 865 6696 which had the content "Message not found". If I put the number into a t9 predictive text emulator, it spells "Unknown" I'...
58
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3answers
106k views

Does a mobile phone charger that is plugged in but has no phone attached to it use energy?

Obviously, I am talking about simple charger without any indicator lights etc. If yes, why does it use energy when the circuit is not closed? Examples of the claim: http://www.treehugger.com/culture/...
26
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1answer
1k views

Does immersing a wet phone in rice prevent it from dying?

There is a tale spreading around about people who have supposedly resuscitated their cell phones using bags of rice after dropping them in water or otherwise getting them soaked. The supposed science ...
3
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1answer
541 views

Are the location of brain-tumours linked to which ear you use a cell-phone with?

In the meta-analysis Cell phones and brain tumors: a review including the long-term epidemiologic data, they find that: The results indicate that using a cell phone for > or = 10 years ...
9
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2answers
976 views

Is it possible to bake a cake with a phone inside, leaving the phone intact?

Recently the following picture has been circulating on some websites on the internet: I highly suspect this is some kind of a fake. Is there any data on maximum operating temperature for a mobile ...
8
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1answer
1k views

Can ionizing radiation be seen in videos taken on a mobile phone?

This article1, among other things, claims that mobile phones can be used to detect radiation: ... the presence of scintillating pixels – white dots that flashed on and off briefly in the mobile ...
7
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3answers
352 views

Can mobile phone cell towers be spoofed in ways that allow interception of calls?

There are multiple forms of evidence that people can spoof cell towers and monitor cells. This Forbes article reports a proof of concept that works for 2G technology. This article from The Register ...
4
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0answers
234 views

Can StoreDot batteries be charged in two minutes?

CNET writes: StoreDot's system, which you can see in action in the video [at the link], uses a different chemical makeup to traditional batteries. We saw a modified Samsung Galaxy S5 go from 15 ...
28
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1answer
38k views

Can you detect a hidden camera in a trial room/changing room with your phone?

There's this message spreading virally over the internet: Read This Message.....!!!! How to Detect Hidden Camera in Trial Room? In front of the trial room take your mobile and make sure ...
13
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0answers
976 views

Is the Craigslist rant saying people stay in restaurants on average a hour longer a hoax?

According to a craigslist post supposedly created by an anonymous NYC restaurant, customers take almost twice the time today to eat than 2004 because of mobile phones, food photos and fussiness. I ...
19
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1answer
4k views

Does the presence of a cellphone affect sperm count or heart rate?

A doctor from my girlfriend's family was talking to her over the weekend. She explained to me that he was talking about how there is proof that cellphones decrease sperm count when being stored in a ...
22
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1answer
1k views

Are smartphones, keyboards, and tablets more contaminated with Staphylococcus aureus than a public toilet seat?

Source: How clean is your iPad? – a “Which?” hygiene investigation We use them every day while eating lunch or a snack, but new Which? research has revealed tablets, smartphones and keyboards may ...
6
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0answers
378 views

Does turning off cellular data when connected to WiFi extend a phone's battery life?

The claim has been repeatedly made on the internet (example: 1, 2, 3* )that when a mobile phone is connected to WiFi, disabling cellular data can extend battery life, as it stops the phone from ...
4
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1answer
860 views

Do Samsung phone batteries contain secret chips and antennae for stealing data?

This YouTube video is one of several showing that, if you open a Samsung mobile phone battery, it contains a "secret chip" and antenna, and suggests it can be used for transmitting your secret data to ...
12
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3answers
1k views

Are there mobile phones in North Korea?

Is it true that there are no mobile phones in North Korea? I have heard opposing views saying that there is a working mobile network that many people use and views that say there isn't any of them in ...
7
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1answer
661 views

Is Tetris by Electronic Arts the best selling video game on mobile?

According to Wikipedia, Tetris by Electronic Arts is the best selling video game ever made. With 100 million downloads, it sold 17.46 million copies more than the next best selling game, Wii Sports ...
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0answers
80 views

Does white background increase battery consumption of a smartphone? [duplicate]

Here is a page with tips on how to decrease power consumption of a smartphone (in Russian). One of the tips is to use black background for Google search. I wonder whether it actually decreases ...