5G 是什么意思
要用上 5G，需要三个条件同时成立：手机支持、方案允许，以及你所在的位置确实有 5G 覆盖。缺一项就会回落到 4G。
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常见问题
I bought a plan that says it supports 5G, so why is my phone showing 4G?+
Because the plan's support is only one of the three conditions. The other two are that your handset supports the bands that country uses, and that the spot you are standing in has 5G from the network your plan rides on. Miss either and the phone falls back to 4G automatically, which is normal behaviour rather than a fault. Work through the checks on this page in order, starting with the network mode on the line carrying your data.
Can an older handset that does not support 5G still use a travel eSIM?+
Yes, as long as the handset supports eSIM and is not carrier-locked. It will sit on 4G, which is enough for maps, chat, ride hailing and ordinary video calls. Supporting 5G and supporting eSIM are separate questions, and the eSIM one is the one to settle before buying, using the device checker on the site.
Does 5G make the data in my plan run out faster?+
The network does not make files bigger — opening a map once costs the same on 4G as on 5G. Behaviour is what changes: a smoother connection invites longer videos, and streaming apps often pick a higher resolution on their own. If consumption worries you, set video quality manually and switch off autoplay in social apps.
Should I cap my phone at 4G while travelling?+
There is no single answer for everyone. In an area where 5G is patchy and the phone keeps switching, capping at 4G for a while usually steadies the connection and may help battery life too. In a city where coverage is continuous there is no need. The real effect depends on your model and your location, so it is worth comparing for yourself.
How do I find out whether the places I am going to have 5G?+
The most direct source is the coverage information the local operators in that country publish themselves, since travel plans ride on those local networks. We do not publish coverage percentages for any country ourselves, because that information changes constantly and differs by network. If you want to know which network a particular plan uses, ask us on LINE.
Does a regional plan give the same 5G experience in every country it covers?+
Not necessarily, because a regional plan connects through a different partner network in each country. The experience therefore varies with each country's infrastructure and with each network's agreement. The plan page is the correct reference, and if one country on your route matters more than the rest, ask before buying.