I've heard a lot about toddler exposure to cell phones. I would like to know, given that all phones have a given SAR rating, which is affected entirely by the 4G and Wi-Fi antennas releasing radiation, if I switch these off, is it safe to let my toddler play with cell phone games?


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    While I think this is on topic here, you may also want to visit Skeptics; specifically, this search gives a lot of good questions and answers.
    – Joe
    Nov 1, 2018 at 17:12
  • Also please note: we cannot address this as a medical question, as those are off topic. We can provide information on research studies and similar about the safety in general, but your doctor is your best source of information for specific information about your toddler. Answerers, please keep this in mind as well, and limit your answers to well researched information and not to comments that are not sourced, or we'll have to delete your answer. Thanks!
    – Joe
    Nov 1, 2018 at 17:16
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    Can you indicate what you mean by "safe"? The current answers focus on the radiation from the 4G/WiFi antennas, but safety could also cover aspects like screen time. Nov 1, 2018 at 18:14

2 Answers 2


In addition to Ian's excellent answer, one point to consider is that toddlers are not typically using cell phones as a phone, but instead as a gaming device. This has an important impact on radiation safety: the phone is not held close to the head, but instead is at least a foot away, usually more. As such, they're not meaningfully exposed to the major source of risk.

From the American Cancer Society:

Because cell phones usually are held near the head when being used, the main concern has been whether they might cause or contribute to tumors in this area....

The ACS continues to describe what risks cell phones carry in the main risk case (of being held near the head), and agrees with the WHO:

As noted above, the RF waves given off by cell phones don’t have enough energy to damage DNA directly or to heat body tissues. Because of this, it’s not clear how cell phones might be able to cause cancer. Most studies done in the lab have supported the idea that RF waves do not cause DNA damage.

They then explain some of the major studies, including a few that do appear to show links (and explores why they're controversial, in very good detail from a neutral POV).

The major studies - excerpting the main tagline; please read the full page for a discussion of other lesser findings in the studies, some of which do not directly agree (but have significant limitations, thus why they're not included in the main tagline).


The 13-country INTERPHONE study, the largest case-control study done to date, looked at cell phone use among more than 5,000 people who developed brain tumors (gliomas or meningiomas) and a similar group of people without tumors. Overall, the study found no link between brain tumor risk and the frequency of calls, longer call time, or cell phone use for 10 or more years.

The Danish cohort study

A large, long-term study has been comparing all of the people in Denmark who had a cell phone subscription between 1982 and 1995 (about 400,000 people) to those without a subscription to look for a possible increase in brain tumors. The most recent update of the study followed people through 2007. Cell phone use, even for more than 13 years, was not linked with an increased risk of brain tumors, salivary gland tumors, or cancer overall, nor was there a link with any brain tumor subtypes or with tumors in any location within the brain.

The Million Women Study

A large prospective (forward-looking) study of nearly 800,000 women in the UK examined the risk of developing brain tumors over a 7-year period in relation to self-reported cell phone use at the start of the study. This study found no link between cell phone use and brain tumors overall or several common brain tumor subtypes, but it did find a possible link between long-term cell phone use and acoustic neuromas.

  • However, cell phone companies probably have a market share almost comparable to big pharma companies and can this probably make experts curb to their interest with grants funding and what not to support them. Nov 1, 2018 at 17:42
  • We aren’t going to be able to answer beyond this level; you may want to go to Skeptics if you want more details of that nature.
    – Joe
    Nov 1, 2018 at 18:14
  • To add to this: turning off your cell phone antennas doesn't turn off your home wifi. Or the neighbors' wifi. Or the cell towers that send signals everywhere, including into your home. Or FM radio towers. Or ...Point being that a cell phone is only likely to be a tiny fraction of the RF radiation you get exposed to.
    – Becuzz
    Nov 1, 2018 at 18:36
  • Also, when you are talking on the phone it has to be continuously transmitting (actually in short bursts many times a second). If you are playing a game then the data rate is much lower, possibly zero, and so the RF emissions are correspondingly lower too. Nov 3, 2018 at 9:17

From the WHO:

A large number of studies have been performed over the last two decades to assess whether mobile phones pose a potential health risk. To date, no adverse health effects have been established as being caused by mobile phone use.
Emphasis mine.

This means that even if you leave the radio on, you won't be harming your toddler. However, if you leave the radio on, your toddler will be able to make long distance phone calls or surf the internet, so ... best to turn it off, I guess?

  • I don't know how reliable this WHO assessment is. Have you looked into SAR ratings? Anyways, I think it's best to use it in airplane mode. Nov 1, 2018 at 16:46
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    Are you suggesting that you are going to trust random people on a stackexchange post more than the experts at the World Health Organization on health issues? In my opinion, I don't think that's a good idea. Nov 1, 2018 at 16:52

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