アイルランドの通信エリア

アイルランド の数値が意味すること

重要な数値は2つあり、どの会社も引用するのはそのうち1つだけです。一般的な速度は61 Mbps。調子のいいときがどれくらいかを示す数字です。

読む価値があるのは10パーセンタイル、16 Mbpsのほうです。駅の上の基地局が混み合い、周りの全員が同じ電波につながっている、その日の下位1割のときの速度です。中央値が高くて下限が低い国は、本当に必要になるその瞬間まではみごとに動く国だということです。

ビデオ通話やテザリングが欠かせない旅なら、一般的な速度ではなく混雑時の数値を基準に計画してください。

アイルランドで回線が混んだときに起きること

混雑は故障ではなく、火曜の夜です。問題は、そのときeSIMに何ができるかで、たいていの旅行用eSIMの答えは「何もできない」です。国ごとに卸契約が1つ、ネットワークが1つ、路上に立ったまま他社のeSIMをもう1枚買う以外に逃げ道がありません。

ここではOrbisloの通信はVodafone、Threeを通ります。いま乗っているネットワークが劣化したら、旅行の途中でも、お客様が頼まなくても別の回線へ移します。そのときに邪魔をするのではなく、あとからお知らせします。

アイルランドの携帯キャリア

• Three Ireland: Three had the largest mobile base in the second quarter of 2026 with 50.2 percent of all subscriptions once mobile broadband and machine to machine SIMs are counted, but only 27.7 percent of voice subscriptions.
• Vodafone Ireland: Vodafone led voice subscriptions in the second quarter of 2026 with 31.8 percent, excluding mobile broadband and machine to machine lines. Counting every subscription, its share was 26.3 percent.
• Eir: Eir held 24.9 percent of voice subscriptions and 14.6 percent of all mobile subscriptions in the second quarter of 2026, the third of Ireland's three network operators.
• Brands on the big networks: GoMo and Lyca Mobile run on the Eir network, while Clear Mobile and An Post Mobile use Vodafone's, so each brand follows its host network's technology changes, including 3G retirement.
• Smaller brands: Tesco Mobile held 8.1 percent of voice subscriptions in the second quarter of 2026, ahead of Lyca Mobile and Virgin Mobile at 2.5 percent each, Sky Mobile at 1.7 percent and An Post Mobile at 0.9 percent.
• Market size: Ireland counted 11,028,477 mobile subscriptions at the end of June 2026. Of those, 4,481,995 were machine to machine connections and 394,453 mobile broadband, leaving 6,152,029 voice subscriptions.

アイルランドの旧世代ネットワーク

• Vodafone switched off its 3G network in October 2024, which also ended 3G for Clear Mobile and An Post Mobile customers who use the Vodafone network.
• Eir is switching off its 3G network in phases from October 2026 and contacting customers who rely on 3G only services. The change also retires 3G for GoMo and Lyca Mobile, which run on the Eir network.
• Donegal is the first county to lose Eir's 3G, on 1 October 2026, with the other counties following in phases. Eir says calls and texts keep working for all its customers, and options for affected users include new settings, a free SIM or a compatible device.
• Where 3G is retired, phones that support only 2G and 3G still make calls over 2G, but mobile data drops to much slower 2G speeds. A 4G or 5G phone is not affected.

アイルランドの5G

• Vodafone launched Ireland's first commercial 5G network on 13 August 2019, in Dublin, Cork, Limerick, Galway and Waterford, using Ericsson equipment.
• ComReg's 2017 auction assigned all 350 MHz of the 3.6 GHz band to five winners for about 78 million euros, with licences running to 31 July 2032. Three won 100 MHz nationally, Vodafone 105 MHz in the cities and Meteor, part of the Eircom group, 85 MHz in the cities.
• The Multi Band Spectrum Award ended on 14 December 2022 with Eir, Imagine, Three and Vodafone winning spectrum in the 700 MHz, 2.1 GHz, 2.3 GHz and 2.6 GHz bands, paying about 448 million euros for rights that run until 13 February 2042.
• ComReg said the 2022 award raised the spectrum available for fixed and mobile services by 46 percent, and described the bands as suited to 5G and to widespread mobile coverage.
• Three became the first Irish operator to launch 5G Standalone on its public network in December 2023, running on a dedicated 5G core. It was first offered to selected business customers on a trial basis.

アイルランドのネットワークについて

• At the end of June 2026, 30.3 percent of Irish mobile subscriptions were on 5G, 34.2 percent on 4G, 1.7 percent on 3G and 24.7 percent on 2G, counting mobile broadband and machine to machine lines.
• ComReg publishes a predicted outdoor coverage map built from data supplied by Eir, Three and Vodafone. It grades signal from very good to no coverage, which helps when planning a drive through rural areas.