Japan APN settings

In short

For docomo, set the APN to spmode.ne.jp and leave the username and password blank. Below are the mobile data settings for all 9 carriers in Japan: docomo, au (KDDI), SoftBank, Rakuten Mobile, ahamo, povo, LINEMO, Y!mobile and UQ mobile. Tap a value to copy it, and open the MMS settings if picture messages fail.

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9 of 9 from the carrier

Updated 1 October 2026 · SimVala editorial

9 carriers in Japan

povo

docomo APN

spmode.ne.jp

Username and password: leave blank

APN settings for each carrier in Japan

Checked 2026-10-01

docomo APN settings

From docomo Own network in Japan440-10

APN for mobile data

spmode.ne.jp

Name: docomo
Username: Leave blank
Password: Leave blank
Authentication: None
APN protocol: IPv4/IPv6
MCC: 440
MNC: 10

Leave authentication unset and use the IPv4/IPv6 protocol. The profile name can be anything.

docomo sends iPhone users to its iPhone activation guide instead of listing manual values.

We found no separate MMS settings for docomo. Picture messages usually work with the APN above, or your phone sets them itself.

au (KDDI) APN settings

From au (KDDI) Own network in Japan440-50

APN for mobile data

uno.au-net.ne.jp

Name: au (KDDI)
Username: 685840734641020@uno.au-net.ne.jp
Password: KpyrR6BP
Authentication: CHAP
MCC: 440
MNC: 50

Phones bought from au usually need no manual APN. 5G devices use the 5G NET profile below.

Delete any other carrier's APN profile in Settings > General > VPN & Device Management before you use an au SIM.

Other APNs

5G NET (5G devices)
uad5gn.au-net.ne.jp
Username au@uad5gn.au-net.ne.jp, password au
LTE NET for DATA add on
au.au-net.ne.jp
Username user@au.au-net.ne.jp, password au
This is for the optional data only add on service.

We found no separate MMS settings for au (KDDI). Picture messages usually work with the APN above, or your phone sets them itself.

SoftBank APN settings

From SoftBank Own network in Japan440-20

APN for mobile data

plus.4g

Name: SoftBank
Username: plus
Password: 4g
APN type: default,ia,mms,supl,hipri
MCC: 440
MNC: 20

The profile name can be anything.

Other APNs

3G smartphones
plus.softbank
Username plus, password softbank
3G service ended in April 2024.

Picture messages (MMS) settings›

MMS APN: plus.4g
MMSC: http://mms-s
MMS proxy: andmms.plusacs.ne.jp
MMS port: 8080

Rakuten Mobile APN settings

From Rakuten Mobile Own network in Japan440-11

APN for mobile data

rakuten.jp

Name: Rakuten Mobile
Username: Leave blank
Password: Leave blank
APN type: default,supl
APN protocol: IPv4/IPv6
MCC: 440
MNC: 11

Devices sold for the Rakuten network need no APN setup. If hotspot does not work, add dun to the APN type.

iPhones that used Rakuten, Y!mobile, UQ mobile, IIJmio, LINE Mobile or mineo need no APN entry, but delete the old APN profile.

We found no separate MMS settings for Rakuten Mobile. Picture messages usually work with the APN above, or your phone sets them itself.

ahamo APN settings

From ahamo Runs on docomo440-10

APN for mobile data

spmode.ne.jp

Name: ahamo
Username: Leave blank
Password: Leave blank
Authentication: None
APN protocol: IPv4/IPv6
MCC: 440
MNC: 10

On Android, use the same settings as docomo.

Install the ahamo APN profile during iPhone setup (step 2 of the iPhone start up guide).

We found no separate MMS settings for ahamo. Picture messages usually work with the APN above, or your phone sets them itself.

povo

povo APN settings

From povo Runs on au (KDDI)440-50

APN for mobile data

povo.jp

Name: povo
Username: Leave blank
Password: Leave blank
APN protocol: IPv4/IPv6
MCC: 440
MNC: 50

Name the profile povo2.0 and leave other fields empty. Android needs the APN even on phones bought from au.

iPhones on iOS 15 or later need no APN setup.

We found no separate MMS settings for povo. Picture messages usually work with the APN above, or your phone sets them itself.

LINEMO APN settings

From LINEMO Runs on SoftBank440-20

APN for mobile data

plus.acs.jp.v6

Name: LINEMO
Username: lm
Password: lm
Authentication: CHAP
APN type: default,ia,mms,supl,hipri
MCC: 440
MNC: 20

Pick the LINEMO APN in the list, not LINE Mobile. Android phones bought from SoftBank or Y!mobile set up automatically.

Install LINEMO's APN profile from its iOS APN page in Safari, and remove any other carrier's profile first.

We found no separate MMS settings for LINEMO. Picture messages usually work with the APN above, or your phone sets them itself.

Y!mobile APN settings

From Y!mobile Runs on SoftBank440-20

APN for mobile data

plus.acs.jp.v6

Name: Y!mobile
Username: ym
Password: ym
Authentication: CHAP
APN type: default,ia,mms,supl,hipri
MCC: 440
MNC: 20

Name the profile Y!mobile APN. Some SIM free Android phones set up automatically.

For SIM free or unlocked iPhones, delete another carrier's APN profile first.

Picture messages (MMS) settings›

MMS APN: plus.acs.jp.v6
MMSC: http://mms-s
MMS proxy: andmms.plusacs.ne.jp
MMS port: 8080

UQ mobile

UQ mobile APN settings

From UQ mobile Runs on au (KDDI)440-51

APN for mobile data

uqmobile.jp

Name: UQ mobile
Username: uq@uqmobile.jp
Password: uq
Authentication: CHAP
APN type: default,mms,supl,hipri,dun
APN protocol: IPv4/IPv6
MCC: 440
MNC: 51

Do not choose IPv6 only as the protocol, or data will not work. If you are asked for MCC and MNC, enter 440 and 51.

We found no separate MMS settings for UQ mobile. Picture messages usually work with the APN above, or your phone sets them itself.

SimVala is not affiliated with, endorsed by or sponsored by any carrier on this page. Logos belong to their owners and are shown only to help you find your carrier.

Carriers in Japan

From the carrier's own pages

With MMS settings

Need a username

Japan APN settings at a glance

The main internet APN for every carrier in one table. The cards above have the full settings, other APNs and the MMS values.

Carrier	APN	Username / password	MMS	Network
docomo	spmode.ne.jp	blank	Not listed	Own network
au (KDDI)	uno.au-net.ne.jp	685840734641020@uno.au-net.ne.jp / KpyrR6BP	Not listed	Own network
SoftBank	plus.4g	plus / 4g	Listed	Own network
Rakuten Mobile	rakuten.jp	blank	Not listed	Own network
ahamo	spmode.ne.jp	blank	Not listed	Runs on docomo
povo povo	povo.jp	blank	Not listed	Runs on au (KDDI)
LINEMO	plus.acs.jp.v6	lm / lm	Not listed	Runs on SoftBank
Y!mobile	plus.acs.jp.v6	ym / ym	Listed	Runs on SoftBank
UQ mobile UQ mobile	uqmobile.jp	uq@uqmobile.jp / uq	Not listed	Runs on au (KDDI)

Mobile data in Japan: what to know

4 of the 9 carriers here run their own network, and 5 rent space on one. ahamo runs on docomo, povo runs on au (KDDI), LINEMO runs on SoftBank, Y!mobile runs on SoftBank and UQ mobile runs on au (KDDI). A carrier that rents a network often has its own APN, so copy the one on its card, not the host's.

au (KDDI), SoftBank, LINEMO, Y!mobile and UQ mobile use a username and password in the APN. For the others, leave both fields empty: a username where none is needed can stop data from working. Where an authentication type is given: au (KDDI) uses CHAP, LINEMO uses CHAP, Y!mobile uses CHAP and UQ mobile uses CHAP.

SoftBank and Y!mobile list separate settings for picture messages (MMS). If texts work but photos in messages do not, those are the values to check. au (KDDI) and SoftBank also have a second APN for some plans or devices, shown on their cards.

The carriers here use the mobile country code 440, the first three digits of every network code in Japan. Android usually fills in the MCC and MNC from the SIM, so you rarely need to type them.

Visiting Japan with your own SIM? Keep your home APN: roaming data still goes through your home carrier. You only need these settings with a local SIM bought in Japan. Or skip the SIM shop with a Japan eSIM, which sets its own APN.

How to change the APN

iPhone

Open Settings, then Mobile Data (Mobile Service or Cellular in some regions).
Tap Mobile Data Options (with two lines, tap the line first), then Mobile Data Network.
Type the APN, username and password into the Mobile Data section.
Go back. The change saves by itself.

No Mobile Data Network option? Your carrier locks it, and the iPhone sets the APN for you.

Android

Open Settings, then Network and internet (Connections on Samsung).
Tap SIMs or Mobile networks, pick your line, then Access Point Names.
Tap + or Add, and fill in the fields shown above for your carrier.
Save from the menu, then tap the new APN so it is selected.

Made a mess of it? Reset to default in the same menu brings the original settings back.

Still no data in Japan? Check these

Data and roaming on
Mobile data must be on, and airplane mode off. On a local SIM, data roaming can stay off.
The APN, letter for letter
For docomo that is spmode.ne.jp. One wrong dot or capital is enough to block data.
Username only if listed
Only au (KDDI), SoftBank, LINEMO, Y!mobile and UQ mobile need one here. Leave it blank for the rest.
Select it and restart
On Android, tap the entry so its dot is filled. Then restart the phone and open a website.

APN settings near Japan

All 34 countries

Calls and texts work, only data does not? That points to the APN, because calls and normal texts do not depend on it. If nothing works at all, the SIM itself may not be active yet: ask the shop or the carrier.

More free tools

All tools

Sources

Each carrier card names its own sources. Checked 2026-10-01.

Japan APN settings, answered

What is the docomo APN?+

The docomo internet APN is spmode.ne.jp, with the username and password left blank.

What is the au (KDDI) APN?+

The au (KDDI) internet APN is uno.au-net.ne.jp, with username 685840734641020@uno.au-net.ne.jp and password KpyrR6BP. Some plans use a different APN, listed on this page.

What is the SoftBank APN?+

The SoftBank internet APN is plus.4g, with username plus and password 4g. Some plans use a different APN, listed on this page.

What is the Rakuten Mobile APN?+

The Rakuten Mobile internet APN is rakuten.jp, with the username and password left blank.

Which carriers in Japan need a username and password?+

au (KDDI), SoftBank, LINEMO, Y!mobile and UQ mobile use a username and password in the APN. For the others, leave both fields blank.

Do I need to set an APN in Japan?+

Usually not. Your phone reads the APN from the SIM and sets it for you. You only need to add it by hand if mobile data does not work, often after moving a phone between networks or on an unlocked import.

I am visiting Japan. Should I change my APN?+

Not if you use your own SIM: roaming uses your home carrier's APN. You only need the settings on this page if you buy a local SIM from a carrier in Japan.

Will a wrong APN break my phone?+

No. At worst, mobile data or picture messages stop working until you fix it. On Android, Reset to default in the APN menu puts the carrier's own settings back.

Visiting Japan? Skip the local SIM

A travel eSIM installs before you fly and usually sets its own APN. Pay in crypto, no ID, no email.

See Japan eSIMs All APN settings