5G vs 4G Abroad: Does 5G Matter When Travelling? (2026)
5G vs 4G abroad: when 5G makes a real difference on a trip, when 4G is plenty, whether your eSIM supports 5G roaming, and how to set up your phone to use it.
ArriGo team 10 min read Updated
5G vs 4G abroad comes down to this: 5G gives you faster speeds and quicker response in busy cities, while 4G still covers far more ground and handles everyday travel apps well. For most trips, a strong local network matters more than the generation label, but 5G earns its keep in crowded places at busy times.
Below, we look at what 5G actually changes for a traveller using real measurements from Ookla, whether a travel eSIM supports 5G, why you sometimes see “LTE” even on a 5G plan, and how to set your phone so it uses 5G when it helps and saves battery when it does not.
Key takeaways
- 5G raises the speed ceiling and cuts delay under load; Ookla found 5G users in Spain got 106.40 Mbps at evening peak versus 20.30 Mbps on 4G.
- 4G still covers more territory in most countries, and your phone will switch to it outside city centres. That is normal.
- An eSIM supports 5G exactly as a physical SIM does; what matters is your phone, the local network and the plan.
- On iPhone, the 5G Auto setting gives you 5G when it makes a difference and LTE when it would only cost battery.
5G vs 4G abroad: what is the real difference?
5G and 4G (also called LTE) are two generations of mobile network. Most countries now run both side by side, often on the same masts. Your phone connects to whichever is available and suits the moment.
For a traveller, the differences show up in three places: speed, behaviour under load and coverage.
| 5G | 4G LTE | |
|---|---|---|
| Top speeds | Higher, especially in city centres | Lower, but enough for everyday apps |
| In crowds and at busy times | Holds up better, with lower delay | Slows more when many phones share a mast |
| Coverage outside cities | Patchier in many countries | Wider, including small towns and highways |
| Phone needed | 5G-capable model (iPhone 12 or later, many recent Android phones) | Almost any smartphone |
| Battery use | Can be higher if forced on all the time | Generally steady |
The middle row is the one most travel guides miss. Mobile networks share capacity among everyone connected to the same cell, so they slow down when demand peaks. 5G does not remove that, but it softens it.
When does 5G make a real difference on a trip?
The clearest evidence comes from Ookla’s study of peak-hour congestion on European mobile networks, published in May 2026 and based on Speedtest results from the first quarter of 2026. Across the 30 European markets it covered, performance dipped most between 7 and 9 p.m. local time, exactly when travellers are back from the beach or out for dinner.
Across 10 European markets with high 5G use, Ookla found the average speed drop at evening peak was 32% on 4G and 27% on 5G. In absolute terms, the gap is much bigger: in Spain, a 5G user still got 106.40 Mbps at peak, against 20.30 Mbps for a 4G user in the same market.
The more consistent win is responsiveness. In every market Ookla tested, 5G had lower delay under load at peak than 4G, by 12% in Denmark up to 44% in the United Kingdom. In the UK, that meant 507 milliseconds on 5G versus 904 on 4G. Delay is what makes a video call stutter or a map hang, so this matters more day to day than headline speed.
Tourist season puts extra pressure on networks
Ookla’s same study found that congestion follows the tourist calendar. In Croatia, the evening peak speed fell from 58.70 Mbps in January 2024 to 34.90 Mbps in August 2024, and the pattern repeated in 2025. Spain showed a similar summer squeeze. Visitors rely heavily on mobile data because they have no home Wi-Fi, and they crowd into the same coastal areas.
So 5G is most useful exactly where travellers gather: city centres, beach towns in high season, stadiums, festivals and transport hubs.
5G is not a guarantee of speed
5G can fill up too. Ookla’s October 2026 analysis of London’s mobile networks found that London’s median 5G download speed fell from 200 Mbps in mid-2021 to 133 Mbps in the third quarter of 2026, as the share of tests on 5G nearly doubled to 80%. Paris, by comparison, has kept its 5G median above 225 Mbps since mid-2021. The local network’s investment matters as much as the logo in your status bar.
When is 4G enough for travel?
For most of what you do on a trip, a solid 4G signal is fine:
- Google Maps or Apple Maps with live directions
- WhatsApp, iMessage and FaceTime, including video calls on a decent signal
- Ride-hailing, restaurant bookings and translation apps
- Instagram, TikTok and YouTube at normal quality
- Checking email or a booking on a laptop through your phone’s hotspot
Where 4G is enough, the deciding factor is coverage. If you are driving through the countryside, hiking or staying in a small town, the network with the widest 4G footprint will serve you better than one with 5G only in the capital. Outside big cities, your phone will spend much of its time on 4G even on a 5G plan, and that is not a fault.
Does an eSIM support 5G?
Yes. An eSIM is simply a digital version of the SIM card; it carries the same credentials and has no effect on whether you get 4G or 5G. Three things decide whether you see 5G abroad:
- Your phone supports 5G. Apple’s guide to using 5G with your iPhone lists iPhone 12 and later. Many Android phones from recent years support it too; on Pixel, Google’s dual SIM help page notes that the Pixel 4a (5G) and later can connect to 5G while using two SIMs.
- The local network has 5G where you are. Coverage starts in city centres and spreads outward.
- Your plan or roaming agreement allows 5G. This is where roaming and travel eSIMs can differ.
5G roaming on your Canadian plan
When you roam on your Bell, Rogers or Telus plan, your phone uses a foreign network under a deal between your carrier and that operator. Whether that deal includes 5G varies. Apple puts it plainly: many carriers support 5G roaming, and if yours does not, you can use 4G, or get a local SIM or eSIM with 5G where it is available.
Cost is the other factor. As of October 2026, Canadian carriers charge by the day for roaming: Bell Roam Better is $13 a day in the US and $16 internationally, Rogers Roam Like Home is $16 in the US and $18 internationally (capped at 20 charged days per bill), and Telus Easy Roam is $16 in the US and $18 internationally, all in Canadian dollars. Our roaming vs eSIM comparison shows how those add up.
5G on a travel eSIM
A travel eSIM connects you to local partner networks in the destination. ArriGo plans can connect to several local networks per country, and the plan page lists them. Our mobile networks page shows every operator we use, tagged with 5G or 4G, so you can see what to expect before you buy.
How fast is mobile data in popular destinations?
Speeds vary far more between cities than most people expect, and a famous destination is not always a fast one. Ookla’s look at mobile speeds in the world’s most livable cities, using Speedtest Global Index data from September 2026, gives a useful snapshot. These are median download speeds across all mobile technologies, not 5G alone.
| City | Median mobile download (Sept 2026) |
|---|---|
| Copenhagen | 261.19 Mbps |
| Lisbon | 239.93 Mbps |
| New York City | 238.95 Mbps |
| Melbourne | 144.43 Mbps |
| Vienna | 144.20 Mbps |
| Sydney | 140.20 Mbps |
| Geneva | 131.64 Mbps |
| Osaka | 117.92 Mbps |
| Tokyo | 85.23 Mbps |
Even the slowest city on that list is fast enough for maps, messaging and video calls. The bigger gaps appear outside cities: Ookla puts Japan’s national median at 67.60 Mbps and Portugal’s at 130.91 Mbps, both well below their major cities. If your trip includes rural areas, plan for 4G and expect speeds to vary.
For a closer look at operators in Europe, see which networks your eSIM uses in Europe, or browse plans directly:
How to make sure your phone uses 5G abroad
Once you have installed your travel eSIM (our step-by-step install guide covers iPhone, Samsung and Pixel), check a few settings.
On iPhone
Apple’s 5G guide explains the options under Settings → Cellular → Cellular Data Options (or Mobile Data Options). With two lines, pick your travel line first, then Voice & Data:
- 5G Auto turns on Smart Data mode: the iPhone uses 5G, but drops to LTE when 5G would not make a noticeable difference, which saves battery. This is the best choice for most travellers.
- 5G On uses 5G whenever it is available, which Apple notes may reduce battery life.
- LTE uses only 4G, even where 5G exists.
Apple also notes that Low Power Mode turns 5G off on iPhone 12 and 13 models except for tasks like video streaming and large downloads. If you see LTE in a city you expected to have 5G, check that first, then turn Airplane mode on and off.
The 5G icon can mislead in both directions. Apple says it depends on how the network is configured and, in rare cases, may appear without 5G coverage. Variants such as 5G+, 5G UW and 5G UC refer to higher-frequency 5G, which Apple supports only in the United States on iPhones bought there.
On Android
On Samsung and Pixel phones, the preferred network type sits in the SIM or mobile network settings for each line. Make sure the travel line is allowed to use 5G, and leave it on automatic so the phone can fall back to 4G when needed.
Does 5G use more data or battery?
On its own, 5G does not make a video bigger or a map heavier. A video call at a given quality uses the same data on 5G as on 4G. What changes is behaviour: on a fast connection, apps may choose higher quality, and Apple’s Allow More Data on 5G mode turns on higher-quality FaceTime and automatic iCloud backups over cellular.
If you are on a fixed travel data plan, set Data Mode to Standard or Low Data Mode in the same Cellular Data Options menu. Low Data Mode pauses automatic updates and background tasks, which stretches a plan noticeably.
Tip: Turn off automatic photo and video backups on mobile data before you fly. Let them run on hotel Wi-Fi in the evening instead, and your data lasts for what you actually need on the go.
Battery is the more practical concern. Forcing 5G On everywhere can drain the phone faster, and so can a weak signal of any kind. 5G Auto on iPhone, or automatic network selection on Android, is the sensible default.
Where is 5G heading by 2030?
5G is quickly becoming the default. The GSMA’s Mobile Economy 2026 report summary forecasts that 57% of all mobile connections worldwide will be on 5G by 2030, while 2G and 3G shrink to 1% and 5%.
The regional picture matters for travel planning. The GSMA expects 5G to reach 89% of connections in North America and 82% in Europe by 2030, but 50% in Latin America. In practice, that means a trip to the United States or the United Kingdom is likely to put you on 5G in most towns, while across much of Latin America you are more likely to spend time on 4G. That is fine: 4G is mature and well covered there.
How to choose a plan: coverage first, then 5G
When you compare travel data options, put the questions in this order:
- Does the plan use a strong local network where you are going? Check the networks listed on the plan page.
- Is there enough data for your trip? Video, hotspot and photo backups are the big users.
- Does it include 5G? A bonus in cities, especially in the evening and in high season.
5G vs 4G abroad is not a reason to pay more on its own. Pick the plan with the best coverage for your route, set your phone to 5G Auto or automatic, and do not worry when the status bar shows LTE in the countryside. To see the networks and plans for your trip, find your destination, or check that your phone is ready on our compatibility page.
Frequently asked questions
Will my phone switch between 5G and 4G on its own?
Yes. Phones move between 5G and 4G automatically depending on what is available and, on iPhone in 5G Auto mode, whether 5G would make a noticeable difference. You do not need to change anything when you cross from a city into the countryside.
Does 5G use more data than 4G?
Not by itself. The same video or map uses the same amount of data on either network. Apps may choose higher quality on a fast connection, and some phones allow more background data on 5G, so keep an eye on streaming.
Is 4G LTE good enough for video calls abroad?
On a decent signal, yes. 4G handles video calls, maps and social apps well; where it struggles is in crowded places at busy times, when many phones share the same mast.
Why does my phone show LTE even though my plan includes 5G?
Usually because there is no 5G coverage where you are, or because the phone decided 5G would not help. It can also happen in Low Power Mode on some iPhones, which limits 5G to save battery.
Do I need a 5G phone to use a travel eSIM?
No. A travel eSIM works on any eSIM-compatible, unlocked phone. A 4G phone simply connects to the 4G network, which covers more ground than 5G in most countries.
Can I use my phone as a hotspot on 5G abroad?
Usually, yes. Hotspot works over 5G or 4G, and most ArriGo plans allow it; the plan page shows this under Coverage and networks. Hotspot use can drain data quickly, so watch your balance.
