Japan Internet Guide: SIM Cards, eSIMs, and Pocket WiFi Compared (2026)

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<h2>Your Options at a Glance</h2>

<p>For official planning, start with <a href="https://www.japan.travel/en/plan/wifi-and-connectivity/" rel="external noopener">JNTO's Wi-Fi and connectivity guide</a>. It covers airport WiFi, hotel WiFi, city hotspots, pocket WiFi rental, and travel SIM cards, and its <a href="https://www.japan.travel/en/faq/" rel="external noopener">visitor FAQ</a> specifically calls out SIM cards, eSIMs, and pocket WiFi as common options for short-term visitors.</p>

<table>

<thead>

<tr><th>Option</th><th>Best For</th><th>Cost (2 weeks)</th><th>Pros</th><th>Cons</th></tr>

</thead>

<tbody>

<tr><td><strong>eSIM</strong></td><td>Most travelers</td><td>¥2,000-4,000</td><td>Instant, no pickup</td><td>Need compatible phone</td></tr>

<tr><td><strong>Physical SIM</strong></td><td>Longer stays</td><td>¥3,000-5,000</td><td>Works with any phone</td><td>Need to pick up/ship</td></tr>

<tr><td><strong>Pocket WiFi</strong></td><td>Groups, multiple devices</td><td>¥5,000-10,000</td><td>Connect many devices</td><td>Another device to carry</td></tr>

<tr><td><strong>Free WiFi</strong></td><td>Budget travelers</td><td>Free</td><td>No cost</td><td>Unreliable, security risks</td></tr>

</tbody>

</table>

<h2>Our Recommendation: eSIM</h2>

<p>For most travelers in 2026, eSIM is the clear winner:</p>

<ul>

<li><strong>Buy before you land</strong>: Activate at Narita/Haneda/Kansai airport</li>

<li><strong>No pickup hassle</strong>: No hunting for SIM stores or waiting for mail</li>

<li><strong>Keep your number</strong>: Your main SIM stays active for calls/texts</li>

</ul>

<h3>Best eSIM Providers</h3>

<ol>

<li><strong>Ubigi</strong>: Best speeds, good coverage, slightly pricier</li>

<li><strong>Airalo</strong>: Most options, competitive pricing</li>

<li><strong>Holafly</strong>: Unlimited data plans, great for heavy users</li>

<li><strong>Mobal</strong>: Good for longer stays, Japan-based company</li>

</ol>

<h2>If You Need a Phone Number</h2>

<p>eSIMs and tourist SIMs typically <strong>don't include a phone number</strong>. If you need to receive calls:</p>

<ul>

<li><strong>Mobal</strong>: Offers Japan phone numbers</li>

<li><strong>Rakuten Mobile</strong>: Requires Japanese address but no contract</li>

<li><strong>IP phone apps</strong>: Skype, Google Voice work over data</li>

</ul>

<h2>Speed Test Results</h2>

<p>We tested in Tokyo, Osaka, and rural Niigata:</p>

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<thead>

<tr><th>Provider</th><th>Tokyo (Mbps)</th><th>Osaka (Mbps)</th><th>Rural (Mbps)</th></tr>

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<tr><td>Ubigi</td><td>85</td><td>78</td><td>45</td></tr>

<tr><td>Airalo</td><td>72</td><td>65</td><td>38</td></tr>

<tr><td>Holafly</td><td>68</td><td>62</td><td>35</td></tr>

</tbody>

</table>

<p>All are fast enough for video calls. Rural areas are slower but still workable.</p>

<p><em>Primary sources: <a href="https://www.japan.travel/en/plan/wifi-and-connectivity/" rel="external noopener">JNTO Wi-Fi and connectivity</a>, <a href="https://www.japan.travel/en/faq/" rel="external noopener">JNTO FAQ on SIM/eSIM/pocket WiFi</a>, and <a href="https://www.japan.travel/en/plan/airport-access/haneda-airport" rel="external noopener">JNTO Haneda Airport access guide</a> for airport SIM and pocket WiFi pickup notes.</em></p>

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