Porn Downloads Putting Squeeze on Japan’s Phone Network

TOKYO — Japanese telecoms NTT DoCoMo and KDDI Corp. have started imposing bandwidth restrictions on their 3G wireless networks, due largely to the popularity of downloading porn on cellphones.

Data traffic is swelling so much that even the Japanese operator of Apple Inc.’s iPhone service said it too is also weighing caps on users with unlimited data plans.

Japan's largest carriers are finding that the hunger for porn is insatiable, particularly after midnight when traffic spikes on the $74 billion network Japan built in 2001. The telecoms report most users land on about eight adult entertainment sites each month, with a typical visit lasting only 11.6 minutes.

“We can’t see customers’ data but can surmise the biggest portion of it is probably movies,” KDDI spokesman Keiichi Sakurai told Bloomberg Business News. “We can’t deny the possibility those movies include adult content.”

With a mobile porn market still relatively untouched, adult production companies (Japan has more than 1,000 studios churning out 17,000 titles last year) have set their sights on trying to exploit their brands. And it’s no wonder because, according to research firm Juniper, global revenue from pornography on mobile devices will more than double to $4.9 billion in the five years to 2013.

“When you have unlimited data, you’re going to have an issue with capacity — it’s an issue that’s been waiting to happen,” said Windsor Holden, principal analyst for Juniper. “It wouldn’t surprise me that it happens in Japan first because they’ve had 3G for so much longer [than the U.S.].

“Whenever there is a new distribution method for adult content, adult content will go that medium,” Holden said. “It’s gone that way since cavemen drew adult pictures in the cave.”

Related:  

Copyright © 2026 Adnet Media. All Rights Reserved. XBIZ is a trademark of Adnet Media.
Reproduction in whole or in part in any form or medium without express written permission is prohibited.

More News

FSC: Age Verification Law Takes Effect June 12

The Free Speech Coalition has issued a reminder notice that West Virginia's age verification law takes effect on June 12, 2026.

Pineapple Support Taps Brad Mitchell, Jean-Micheal Veen for Senior Leadership Positions

Pineapple Support has named Brad Mitchell as its new board president and Jean-Micheal Veen as technology and development chair.

Polish Government Proposes AV Mandate for Adult Sites

Poland’s Council of Ministers on Tuesday endorsed a proposed national law that would require sites and platforms to age-verify users to prevent minors from accessing adult content online.

Brazil Launches Complaints Page for AV Violations

Brazil’s National Data Protection Authority (ANPD) on Monday debuted a portal where citizens can report possible violations of the country’s Digital Statute for Children and Adolescents (Digital ECA), which requires adult websites to age-verify users located in Brazil.

FSC Launches 'Speak Out' Media Campaign for Creators

The Free Speech Coalition (FSC) has announced the launch of FSC Speak Out, a media campaign for content creators to tell their stories.

Pineapple Support, Stripchat to Host LGBTQ Support Group

Pineapple Support and Stripchat are hosting a free online support group for LGBTQ+ individuals within the adult industry, titled "LGBTQ and Proud."

Pornhub Awards Fiesta: A Night of Music, Dancing and Camaraderie

The eighth annual Pornhub Awards transformed Los Candiles Night Club in Glassell Park into a celebration of glamour, glitter, fashion and fame Wednesday night, as performers, creators and industry insiders toasted the year’s winners and danced late into the night while Diplo and Midnight Mary kept the party pulsing from behind the decks.

Ukrainian Parliament Rejects Porn Decriminalization Bill

The Verkhovna Rada, Ukraine’s parliament, on Thursday voted against passage of a bill that would have decriminalized the creation and distribution of pornography in that country — an activity that currently carries a prison sentence of three to five years.

FSC Launches Pride Fundraising Drive

The Free Speech Coalition (FSC) has launched its Pride Fundraising Drive to support its efforts on behalf of the LGBTQ+ community.

Cultpix Debuts AI-Generated Vintage Adult Films at Cannes

At this year’s Cannes Film Festival, B-movie streaming service Cultpix debuted a collection of AI-generated short films drawn from erotic magazine photo spreads published 50 years ago.

Show More