Ubigi eSIM Not Working? Fixes That Actually Help (2026)

Nine times out of ten, a Ubigi eSIM that will not connect is a settings problem, not a broken SIM - so before you panic, work through data roaming, the data line, and the APN in that order. Ubigi runs on Transatel's network and is genuinely solid for in-car connectivity and many country plans, but like every travel eSIM it depends on a few phone settings being exactly right. This guide walks the real fixes in the order Ubigi's own support recommends, so you fix the likely cause first. If you get through all of it and still have nothing, that points at Ubigi's side, and I will be honest about that too.

Is data roaming turned on for the Ubigi eSIM?

This is the single most common reason a Ubigi eSIM shows bars but no data, and it is the first thing Ubigi's own help centre tells you to check. A travel eSIM connects to a local partner network, which your phone treats as roaming even though that is exactly what you paid for. If data roaming is off, you get nothing.

Ubigi's guidance is explicit: make sure Mobile Data and Data Roaming are both enabled and that Airplane Mode is off (Ubigi: why is my connection not working).

• iPhone: Settings > Mobile Service/Mobile Data > tap your Ubigi plan > turn on Data Roaming.
• Android: Settings > Connections (or Network and internet) > Mobile networks > pick the Ubigi profile > turn on Data roaming (Ubigi Android data connection help).

Toggle it on, wait a minute, and check whether data comes alive before you touch anything else.

Is Ubigi actually set as your data line?

If you have more than one SIM or eSIM installed - your home SIM plus Ubigi - your phone may still be trying to use the wrong one for data. That looks identical to a broken eSIM: full signal, no internet.

• iPhone: Settings > Mobile Service > Mobile Data, and select your Ubigi plan as the line used for data. Leave your home line as primary for calls and texts if you want to keep your number reachable.
• Android: Settings > Connections > SIM manager (wording varies by brand) > set Mobile data to the Ubigi profile.

While you are there, turn off "Allow mobile data switching" on iPhone. That setting can quietly bounce your data back to your expensive home SIM, which both costs you money and hides whether Ubigi is working. Set the data line deliberately and test again.

Do you need to set the Ubigi APN?

Most of the time the APN configures itself when you install the profile, but if data still will not flow after roaming and the data line are correct, a missing or wrong APN is the next suspect. This is where a lot of guides get it wrong, so here is the verified value.

Ubigi's APN for Android is mbb (Ubigi APN settings for Android). Note that ubigi.me is Ubigi's account portal, not an APN - do not type a web address into the APN field.

• Android: Settings > Connections > Mobile networks > Access Point Names > select the Ubigi eSIM. If an APN named mobiledata or mbb already appears, make sure it is selected. If nothing is there, add a new APN with the name mbb and save (Ubigi Android APN help).
• iPhone: iOS usually pulls the APN automatically. If you were given a manual value, it goes under Settings > Mobile Service > your Ubigi plan > Mobile Data Network. If you never touched it, leave it - overwriting a working automatic APN can break things.

Always confirm the current value against Ubigi's own help page before editing, because operator settings do change.

Did the plan activate, and are you actually in coverage?

A settings fix cannot rescue a plan that never started or a spot with no partner signal. Before you go deeper, rule these out.

Check the plan is live. Open the Ubigi app or sign in at Ubigi.me and confirm the plan is active and the validity window has not expired. Ubigi's troubleshooting explicitly starts here (Ubigi: connection not working). An expired plan is simply dead, and no setting will revive it.

Check you are in coverage. Ubigi connection quality depends on the local telecom partner, and signal in remote areas is weaker than in cities. If you have just landed, give the phone a couple of minutes to register before deciding it is broken.

Tried everything and still nothing - what next?

If roaming, the data line, the APN, and the plan status all check out and you still have no data, escalate in this order.

1. Restart the phone. A reboot re-registers you on the network and clears a surprising number of eSIM faults. Ubigi recommends it directly.
2. Do a manual network search. On Android, select the Ubigi profile, go to Mobile network, and tap Search networks, then pick the local operator manually. This forces a fresh registration when auto-selection stalls (Ubigi network issue help).
3. Toggle Airplane Mode on for 15 seconds, then off, to trigger a clean reconnect.
4. Confirm the eSIM is still installed. If you deleted the profile to "reinstall it," stop - most eSIMs cannot be reinstalled from the same QR code once removed, and you will need Ubigi support to reissue it.

Give each step a minute to take effect before moving to the next, and change only one thing at a time so you know what fixed it.

When is it actually Ubigi's side, not yours?

Sometimes it genuinely is not you. Reach out to Ubigi support through the app or Ubigi.me if: your plan shows active but no partner network appears anywhere after a manual search, data drops repeatedly in a location where other phones clearly work, or the eSIM profile failed to install at all. These are provisioning or network-partner problems that only Ubigi can resolve, and no amount of toggling on your end will fix them.

To be fair to Ubigi: it is a mature service backed by Transatel, and for in-car eSIMs and a lot of country plans it works reliably once configured. Most "not working" reports really do come down to the settings above.

The bottom line

A Ubigi eSIM that will not connect is almost always fixed by three settings, checked in order: turn on data roaming, set Ubigi as your data line, and confirm the APN (mbb on Android). If those are right and the plan is active and you are in coverage, restart and do a manual network search. Only after all of that is it fair to blame Ubigi and open a support ticket.

If you would rather start clean, eSIMpass is a transparent alternative: fixed-data plans from £2.59, real top-up when you run low, and a "My eSIMs" dashboard that shows your data live so you always know where you stand. You install it the same way - scan a QR code and set it as your data line - and like Ubigi it is data-only, so your home number stays active for calls and 2FA through dual SIM. It will not fix a Ubigi eSIM you already own, but if that one has soured the trip, it is a straightforward reset.

Why does my Ubigi eSIM show signal but no internet?

That pattern almost always means data roaming is off or the wrong line is set for data. Turn on Data Roaming for the Ubigi profile, set Ubigi as your data line in your phone's mobile settings, and check the APN is mbb on Android. Signal bars come from registering on the network; data needs those settings correct on top.

What is the correct APN for a Ubigi eSIM?

On Android, Ubigi's APN is mbb, and it is usually configured automatically when you install the profile. Only enter it manually if data will not work after roaming and the data line are correct. On iPhone the APN is normally set for you. Confirm the current value on Ubigi's official help page before editing, since operator settings can change.

Can I reinstall my Ubigi eSIM if it is not working?

Usually no - most eSIM profiles cannot be reinstalled from the original QR code once you delete them. Try restarting, toggling roaming, and a manual network search first. If you have already removed the profile, contact Ubigi support through the app or Ubigi.me to have it reissued rather than assuming it is gone for good.

Does data roaming cost extra on a Ubigi eSIM?

No. Your phone labels the connection as "roaming" because you are on a local partner network, but that is exactly what your Ubigi plan is for. Enabling Data Roaming on the Ubigi profile does not add charges - it is required for the eSIM to work. Just make sure it is only enabled on the Ubigi line, not your home SIM.

When should I contact Ubigi support instead of troubleshooting?

Contact Ubigi if your plan shows active but no network appears after a manual search, if the profile would not install at all, or if data keeps dropping where other phones clearly work. Those are provisioning or network-partner issues on Ubigi's side that settings changes on your phone cannot fix.