Orbislo Number
Your bank code needs a phone number. Travel eSIMs do not have one.
This is the most searched unsolved problem in the category, and most providers answer it with a help article that says "our eSIM does not support SMS" and stops there.
Why a data only eSIM structurally cannot receive SMS
A mobile subscription has two separate things: an identity and a number. The identity is the IMSI on the SIM, which is what a network checks to decide whether to let you on. The number is the MSISDN, which is what a text message or a call is addressed to. They sound like the same thing and they are not. You can absolutely have one without the other.
Travel eSIM providers buy data only subscriptions from wholesale operators because they are cheaper, simpler to distribute across borders, and free of the regulatory weight that comes with issuing real numbers. A data only profile is provisioned with an IMSI and no MSISDN. The network happily authenticates you and gives you internet. It has no number associated with you, so when your bank hands a message to its SMS gateway addressed to nobody, nothing happens. There is no queue holding it. Turning something on in Settings will not help, because the missing piece is not on your phone at all.
The three fixes
| Fix | Cost | Set up when | Receives bank SMS | Main risk |
|---|---|---|---|---|
| Keep your home line for SMS | $0 | Before you fly, 2 minutes | Yes, on your existing number | Accidental data roaming charges |
| Wifi calling | $0 on most carriers | Before you fly, mandatory | Yes, over any wifi | Some carriers block it abroad |
| Orbislo Number | $3.89 a month | Any time, including mid trip | Yes, on a new number | Bank must accept a new number |
Fix one: keep your home line, use it only for SMS
This is the right answer for most people and it costs nothing. Your phone can run two lines at once. Leave your home SIM switched on so it keeps your number registered for calls and texts, and set the Orbislo line as the one that carries mobile data. Incoming SMS is free or close to free almost everywhere, because the charge for a text sits with the sender rather than the receiver.
The one thing you must do is turn data roaming off on the home line. That is where the horror stories come from: a home line quietly pulling background app refresh at roaming rates for nine days. On iPhone, Settings, then Cellular, then tap the home line, then Data Roaming off. Also turn off Allow Cellular Data Switching, which is a helpful feature at home and an expensive one abroad, because it lets the phone fall back to your home line whenever the Orbislo line dips. The full walkthrough with screenshots is on the iPhone install page and the Android one.
Fix two: wifi calling, switched on before you fly
Wifi calling routes your home number's calls and texts over any internet connection instead of over a mobile network. It is free on most carriers, it works from a hotel in another country, and it means your home number keeps working with your home SIM physically switched off, which removes the roaming risk entirely.
The catch is the setup order. Several carriers require you to enable wifi calling while you are on their network, and some require an address for emergency call routing that they will only accept from a domestic connection. Enable it at home, then test it: put the phone in airplane mode, turn wifi back on, and ask someone to text you. If the text arrives, you are covered for the whole trip. If you wait until you are abroad to try this for the first time, there is a real chance you cannot enable it at all, and the carrier support line you need to call is one you cannot reach.
Fix three: an Orbislo Number at $3.89 a month
Sometimes the first two do not work. Your home carrier has already cut you off. You are moving countries and giving up the home line. Your phone has one physical SIM slot and it is now holding a local SIM. Or you simply do not want a second subscription running in the background to a carrier you are trying to leave. For those cases we sell a real mobile number attached to your Orbislo account for $3.89 a month.
- A real mobile number with a real country code, not a VoIP range that banks reject on sight.
- Receives SMS and voice, delivered into the Orbislo app, on any network your Passport is attached to.
- Works over data, so it arrives whether you are on a Japanese network or a Spanish one.
- No minimum term. One month is one month, and a two week trip costs $3.89 in total.
- Numbers available in several countries, so you can pick a code your bank will accept.
$3.89
A month, cancel any time
0
Phone numbers on a standard travel eSIM
2
Free fixes we tell you about first
145
Destinations the number follows you into
Where this still fails, honestly
Some banks will only send a code to the number already on your account, and will not let you change that number without a code sent to the old number. That is a circular lock inside your bank and no eSIM provider can open it. The fix is to update your number with your bank while you are still at home, or to switch that account to an authenticator app, which does not need a network at all and is better security in any case. Do this two weeks before you fly, not the night before, because some banks impose a cooling off period on a number change.
A smaller category of services blocks any number that is not in a residential mobile range. An Orbislo Number is a genuine mobile number rather than a VoIP one, which passes most of those checks, but not all of them. Where a service refuses it, we will tell you rather than sell you a subscription that will not do the job you bought it for.