Talk:Mobile phone

Coffee is not longer a Group 2B carcinogen

The article mentions coffee as an example of a 2B carcinogen, however as of May 2016 it was reclassified as Group 3 --Prstalis (talk) 13:05, 28 September 2020 (UTC)

Kosher Phone section undue.

I bumped the Kosher Phone section down from the "types of phone" to the "use" section; it's plainly undue for a type of phone - the rest of the section covers extremely broad technical classifications that phones fall into (each a major topic in its own right making up a massive swath of the market), whereas Kosher phones are a comparatively tiny ain't-it-strange subclass of feature phones comparable to branded phones used by individual companies. Even as a use section it seems a bit undue, though - each section there is heavily-referenced and capable of supporting its own article, whereas the Kosher Phone section only cites two sources, which (crucially) are referring to essentially different topics. And both sources emphasize that their phones are ain't-it-strange weird-news things. It seems more like the words "Kosher phone" have been applied to a variety of different phones aimed, in varying ways, at the Orthodox Jewish community, but that (despite one source noting some interest by non-Jews) none have particularly caught on even within that community - a quick search finds most sources describe the number of users as in the thousands, which is a rounding error in the cell phone market. If it's going to have its own section then we'll need to find better / broader sources demonstrating that this is an actually successful thing and not a one-off. --Aquillion (talk) 03:54, 6 October 2020 (UTC)

@Aquillion Uzaif Nadeen (talk) 20:04, 7 December 2022 (UTC)

Wiki Education assignment: CMN2160B

This article was the subject of a Wiki Education Foundation-supported course assignment, between 12 January 2022 and 6 April 2022. Further details are available on the course page. Student editor(s): Keaganr11 (article contribs).

How was it invented and why was it invented

How was is invented and why was it invented 122.177.32.26 (talk) 06:36, 18 September 2022 (UTC)

See the "History" section of the article --Chetvorno^TALK 07:46, 18 September 2022 (UTC)

Bad explanation of frequency reuse

This article omits explaining that the entire reason cellular technology was developed was frequency reuse. The Infrastructure section says at the top "Each cell uses a different set of frequencies from neighboring cells" and doesn't make clear that nonadjacent cells reuse frequencies, only mentioning this at the end. It doesn't mention the overcrowded radio spectrum and that there is not enough bandwidth in the entire mobile band to give each phone in a medium sized town its own frequencies, much less an entire country. In the mobile phone systems before the advent of cellular, callers often had to wait until one of the limited number of channels was free to make a call. The amateurish example at the bottom "one uses frequency 1–500, next door cell uses frequency 501–1,000" doesn't explain how many channels an actual cell phone system is assigned. The text doesn't make clear that the cell tower transmitters have low enough power that the radio waves don't interfere with nearby cells using the same frequencies. --Chetvorno^TALK 05:56, 25 January 2023 (UTC)

The first cellphone

The first cellphone information is incorrect and says that it was introduced in 1973 and that's wrong. I have an article showing Mansfield Telephone Co. had a prototype in 1963, it would not allow me to edit it. ~*Brandi*Marie*~ 03:55, 16 April 2023 (UTC) — Preceding unsigned comment added by Brandimarie1985 (talk • contribs)

Wiki Education assignment: ENG 1

This article was the subject of a Wiki Education Foundation-supported course assignment, between 14 August 2023 and 15 December 2023. Further details are available on the course page. Student editor(s): Isaacmtzr, SirSwan789 (article contribs).

— Assignment last updated by Coffeestudy7 (talk) 20:42, 27 September 2023 (UTC)

"Mobile phone (or cellphone)"

As confirmed in the article, these are not synonyms. Grassynoel (talk) 11:20, 12 February 2024 (UTC)

Are there still a lot of mobile phones that aren't cellular? --Wtshymanski (talk) 17:36, 16 February 2024 (UTC)

More information needed

" The growth in popularity has been rapid in some places, for example, in the UK, the total number of mobile phones overtook the number of houses in 1999. Today, mobile phones are globally ubiquitous, and in almost half the world's countries, over 90% of the population owns at least one. " - It would be nice to have more detail on this. Also, is >90% even really correct? Or is it >90% of those people over age X ? Considering that 5.6% of the US population is under five (https://www.census.gov/quickfacts/fact/table/US/RHI125222), I find it improbable that the >90% figure is correct. Kdammers (talk) 21:31, 22 April 2024 (UTC)