1 · The short answer
When a travel eSIM will not connect abroad, the cause is almost always a setting on the phone, not the network. Turn Data Roaming on for the eSIM line, set the eSIM as your mobile data line, and toggle airplane mode once; that sorts most cases in under a minute. If it still fails, work down the twelve fixes below in order. If you need a new eSIM altogether, Ringo Light's Global plan is a data-only eSIM next to your own SIM, $49.99 a month for 133 countries, renewing until you cancel.
The order matters. The first four fixes take seconds and cover the large majority of eSIMs we see stuck in arrivals halls; the last few are rarer and slower. Do not skip ahead to resetting anything.
2 · Fix 1: Data Roaming is off on the eSIM
1. Turn Data Roaming on for the eSIM line. This is the number one cause, by a distance. A travel eSIM has no network of its own in the country you land in; it connects through partner networks, and your phone files every one of them under roaming. With the toggle off, the eSIM installs perfectly, may even show bars, and never passes a byte.
- iPhone: Settings, Mobile Service (Cellular in the US, Mobile Data on older iOS), tap the eSIM line, switch Data Roaming on.
- Pixel: Settings, Network and internet, SIMs, tap the eSIM, switch Roaming on.
- Samsung: Settings, Connections, Mobile networks, Data roaming on. On recent One UI versions the toggle sits per SIM.
Roaming on the travel eSIM costs nothing beyond the plan you paid for. The toggle you want off is the one on your own SIM, so your home carrier cannot start billing you for data.
3 · Fixes 2 and 3: the wrong line, or the line switched off
2. Point mobile data at the eSIM. A phone with two lines sends data down one of them. If that is still your own SIM, the eSIM sits there connected and idle while your home line roams, or does nothing because its roaming is off. On iPhone: Settings, Mobile Service, Mobile Data, pick the eSIM, and switch Allow Mobile Data Switching off so the phone does not wander back to your own line when the signal dips. On a Pixel: Network and internet, SIMs, Mobile data. On a Samsung: Connections, SIM manager, Mobile data under Preferred SIMs.
3. Check that the eSIM line, and mobile data itself, are on. Each line has its own on switch (Turn On This Line on iPhone, the toggle on the SIM's page on Android), and there is a master mobile data switch above them both. Lines are easy to switch off at home between trips and forget. A greyed-out eSIM in the list is the giveaway.
4 · Fixes 4 and 5: airplane mode, then a restart
4. Toggle airplane mode once. After a long flight the phone may still be holding on to the last network it saw at home, or have given up searching. Airplane mode on for ten seconds, then off, forces a fresh search and a fresh registration with the local partner network. Give it a full minute afterwards: the first registration in a new country is slower than every one after it.
5. Restart the phone. If airplane mode did not shake it loose, a full restart clears the modem's state completely. It is old advice because it works, and it costs you a minute.
5 · Fix 6: pick a network by hand
6. Switch network selection to manual and choose another network. A travel eSIM can usually use more than one network in a country, and occasionally the phone locks on to one that will not take it, or one with a poor signal where you are standing. Turn automatic selection off, wait for the list to load (it can take a minute or two), pick a different network, and once you have data switch automatic back on.
- iPhone: Settings, Mobile Service, the eSIM line, Network Selection, Automatic off.
- Android: the eSIM's page, Network operators or Automatically select network, off. On Samsung: Connections, Mobile networks, Network operators.
The same fix applies when an eSIM worked yesterday and is gone today, or when you cross a border by road and the phone clings to the old country's network.
6 · Fix 7: the APN
7. Check the APN if your provider gave you one. The APN is the name of the gateway your data goes through. Most travel eSIMs set it on their own, but now and then a phone keeps an old one or leaves it blank, and the symptom is classic: full bars, the network name showing, and no internet. If your provider's email names an APN, compare it:
- iPhone: Settings, Mobile Service, the eSIM line, Mobile Data Network. Type the APN exactly, lower case as given.
- Android: the eSIM's page, Access Point Names. Add one with the plus sign if the list is empty, save it, and select it.
If the email names no APN, leave the field alone. Typing a guess in there breaks more eSIMs than it fixes.
7 · Fix 8: installed, but not active where you are
8. Make sure the plan is active, and valid in this country. Two situations look identical on the phone. In the first, the eSIM is installed but its plan has not started; many plans, Ringo's among them, start the first time the eSIM connects in a covered country, and some providers ask you to activate in their app first. Check your provider's app or dashboard for a status. In the second, you are simply in a country the plan does not cover: a Europe eSIM in Morocco, an Asia eSIM in a country left off its list. The phone shows No Service, or a network name and no data, and nothing on the phone will fix it.
Check the plan's country list before you leave, and on a multi-country trip check every stop, not only the first. Ringo's plan pages list every country by name, read from the same catalogue the eSIM is sold from.
8 · Fix 9: the plan ran out, or ran its course
9. Check the data left and the end date. A plan that has used its data or reached its last day stops passing traffic, and the phone rarely says why. Your provider's app or dashboard shows both. Fixed-size plans stop dead at zero; some slow you to a crawl instead, which looks like a broken connection.
On Ringo Light, the dashboard shows the plan and its end date. Every plan is unlimited data at full speed: a trip plan runs for 2 weeks or 30 days, and the Global plan renews monthly on your card until you cancel, so if that card was declined, the dashboard is the place to look.
9 · Fix 10: a carrier lock
10. Find out whether the phone is locked to a carrier. A phone bought on a contract or from a carrier's shop can be locked to that carrier, and a locked phone refuses every other carrier's profile. Usually you find out at install, with a message that the SIM is not supported or cannot be used; occasionally the eSIM installs and then never registers.
On iPhone, Settings, General, About, Carrier Lock says No SIM restrictions if you are clear. On Android the check varies by maker; try your carrier's own site. Only the carrier that sold the phone can lift a lock, and abroad that is a slow phone call, so check before you fly.
10 · Fixes 11 and 12: updates, resets, and a deleted eSIM
11. Update the software, then reset network settings. Carrier settings updates arrive quietly on iPhone (Settings, General, About will offer one if it is waiting), and an out-of-date system can mishandle a new profile. If everything above checks out and it still will not connect, reset network settings: iPhone, Settings, General, Transfer or Reset iPhone, Reset, Reset Network Settings; Android, Settings, System or General management, Reset options, reset mobile network settings. It clears saved Wi-Fi networks and your APN entries, so note them first. Read every screen: never choose an option that says it erases eSIMs or downloaded SIMs.
12. If you deleted the eSIM, ask for a new one. An eSIM profile installs once. Delete it, by mistake or to "start again", and the same QR code will not bring it back: the code was spent on the first download. Ask your provider whether it can issue a fresh profile for the same plan. At Ringo, write to us through the with the email you bought with.
Between trips, switch the line off instead of removing it. That one habit avoids fix 12 altogether.
11 · Every setting, iPhone and Android side by side
Swipe to compare →
Labels move between software versions and regions (Cellular in the US, Mobile Service or Mobile Data in the UK), but the menus always sit next to your SIM cards. Our and walk through the install itself, and the covers keeping your own number live next to the eSIM.
12 · If you are buying a new eSIM
Ringo Light is our own data eSIM, sold to fund the full Ringo, one plan that works everywhere with your own number ported onto it. Installed once, next to your own SIM: your number stays on your own line for calls and messages, and the eSIM carries the data.
The Global plan is $49.99 a month for 133 countries, renewing until you cancel, and it is the one to install once and keep. Pay by card, Apple Pay or Google Pay and the eSIM arrives by email within seconds. Install it on Wi-Fi before you fly, set it as your data line, and turn Data Roaming on for it: fixes 1 and 2, done at home.
