Japan 50GB 30 days
NTT docomo
Exits in Japan · NTT docomo
- Data
- 50GB
- Validity
- 30 days
- Hotspot
- Yes
- Technology
- 3G / 4G / 5G
- 5G ready
- Hotspot
- Top-up ready
Validity starts on first connection at the destination
- One network
from$31.30$29.73
NTT DOCOMO and travel eSIM in Japan
NTT DOCOMO is one of the networks your eSIM may use in Japan. Here is who actually decides which network you get, and what to do with that.
Author: Porsch Kunnipat Siramanakul · Co-founderReviewed by: Bob Kanokphon ThongdeePublished: October 12, 2026Last updated: October 12, 2026
Quick answer
- 53 of the 117 Japan plans we sell name NTT DOCOMO as a reachable network, at 4G and 5G.
- NTT Docomo runs LTE on B1, B3, B5, B19, B21, B42 and 5G on n78, n79, n257; your phone needs at least one of them.
- Travel plans connect by roaming, so no plan can promise one specific network.
NTT DOCOMO in brief
Wikipedia's list of 5G NR networks credits NTT Docomo with the first 5G NR carrier-aggregation deployment, in December 2020.
We are not a reseller for this operator and we have not run our own field speed tests. The band and network details below come from the sources listed at the end of the page.
NTT Docomo's bands and technology
| Item | NTT Docomo |
|---|---|
| LTE (4G) | B1, B3, B5, B19, B21, B42 |
| 5G NR | n78, n79, n257 |
| 5G launched | Live |
| 3G | Shut down |
| Network code (MCC-MNC) | 440-10 |
Checked against the sources on 2026-10-12. Only the bands a source confirmed are listed; the network may run others too.
An eSIM can only use NTT Docomo if your phone supports at least one band in this table. Before you fly, open your model's spec page on the maker's site and compare its LTE and 5G band lists.
NTT Docomo's coverage map
NTT Docomo publishes its own coverage map. Look up the street or district you will stay in rather than the country as a whole, because coverage in town and out of town differs a great deal. The map shows NTT Docomo's own network; a roaming plan may not get every technology it shows.
Who licenses NTT Docomo
Mobile networks in Japan are licensed, and their spectrum assigned, by the Ministry of Internal Affairs and Communications (MIC). The bands above are the ones it allocates. A problem with the local network's own service goes to the operator first; a problem with your eSIM plan comes to us.
The plans on our shelf that name NTT DOCOMO
From the supplier record behind each package, 53 of the 117 plans we currently sell for Japan declare NTT DOCOMO as a network the profile can reach, at 4G and 5G. The figure comes from the same catalogue that prices the plan pages, and it moves when the supplier revises the record.
A plan naming NTT DOCOMO means the network sits in the list the profile may choose from. It does not mean your handset will stay on it. The priority order is the supplier's, and the signal where you stand decides.
NTT Docomo beside the other networks in Japan
| Network | LTE bands | 5G bands |
|---|---|---|
| NTT DOCOMO | B1, B3, B5, B19, B21, B42 | n78, n79, n257 |
| KDDI (au) | B1, B3, B5, B11, B18 | Not verified |
| Rakuten Mobile | B3, B28 | n77 |
| SoftBank | B1, B3, B8, B11, B28, B41, B42 | n3, n28, n77, n257 |
A band shared across networks is one a single phone can use on all of them.
Why plans do not name a fixed network
Nearly every travel eSIM is a roaming product: the profile picks a network by an order the supplier sets, not by the buyer. If NTT DOCOMO is weak where you are, try selecting KDDI (au) or Rakuten Mobile or SoftBank manually in the network settings, and keep data roaming on for the eSIM profile.
FAQ
Will my eSIM definitely connect to NTT DOCOMO?+
53 of our plans name NTT DOCOMO as reachable, but that is not a guarantee. Travel plans run over roaming agreements, so the network depends on the supplier behind the plan, your device and where you are.
Which bands does my phone need for NTT Docomo?+
At least one of these, LTE: B1, B3, B5, B19, B21, B42; 5G: n78, n79, n257. Your phone's band list is on the maker's spec page for your model, under "Cellular" or "Network".
Does NTT DOCOMO run 5G, and will my plan get it?+
Yes. NTT Docomo has run commercial 5G, on n78, n79, n257. A travel plan only gets it when the plan permits 5G, your phone supports one of those bands, and you are inside 5G coverage. Miss any one and you fall back to 4G.
How do I see which network I am on?+
Check the carrier name at the top of the screen, or open the mobile-network settings and look at the operator list. If signal is poor, try selecting a network manually instead of automatic, but only one your plan actually supports.
Sources
- operator site — NTT Docomo, October 11, 2026
- NTT Docomo coverage map — NTT Docomo, October 11, 2026
- List of LTE networks in Asia — Wikipedia, October 11, 2026
- List of 5G NR networks — Wikipedia, October 11, 2026
- 3G - decline and decommissions table — Wikipedia, October 12, 2026
- Mobile network codes in ITU region 4xx (Asia) — Wikipedia, October 12, 2026
- MIC — MIC Japan, October 11, 2026
About the author
Porsch Kunnipat Siramanakul
- Co-founder of eSIMonline.asia
- Digital marketer
- Performance marketing and marketing planning
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