BklynBoy wrote: ↑Fri Feb 09, 2024 6:16 am How do any of you deal with receiving 2 factor authentication while abroad? Especially for banking and things like that.

It really depends. 2 factor using an app is generally flawless, once the app has been set up.

2 factor using SMS, or setting up an app using SMS, is indeed a Royal pain in the bum. There are several ways to spread SMS messages around the globe, but since financial institutions have most of their customers in their home market they will use the cheapest way to send SMS messages, which will generally leave out Cambodia. This means you will never receive those SMS messages sent to you. If that's the case, you have to contact the financial institution to request them to send SMS using another channel. Generally they're willing to do so if it's a one time message, but not so much if it's for a range of messages. They don't want to spend too much on you....

ressl wrote: ↑Fri Feb 09, 2024 9:37 pm I am not sure, what you guys try to achive. If you have a eSiM, it is exactly the same, like you have a physical SIM. So having a eSIM + a physical SIM, is exactly the same thing, like having 2 physical SIM.

If a call gets in in either of the SIM, you can answer the call.
If you make a call, you can select, which SIM is used to make the call (there are some phones where you can preset, which numbers are supposed to use which SIM).
Both SIM are active (5 years ago only one SIM was active, but all phones are capable of that now).

To go back to 2FA - if you don't get the SMS on a single SIM setup, eSIM or dual SIM or whatever doesn't solve the issue at all

Obv i am new to this thing because still confusing. I assumed that each sim has a phone number allocated to it. Are you saying if you put both sim cards in-- they both "work". I thought you had to select which sim card your using. I don't mean to make people crazy but ...

because the 2 factor authorization is going to my "home" sim card number. If i understand correctly, using the "local" sim card helps this? //fuck now i am even frustrated

ressl wrote: ↑Fri Feb 09, 2024 10:12 pm Having 2 SIMs in one phone is basically just like having 2 phones in one. Both SIM are operating independently from each other, when it comes to incoming messages. If a SMS is sent to SIM (number) A, but A has not network, only B has, then you won't get the message.
For calls you can set up a forwarding (gets billed the same way, like you would do a call to this number you are forwarding, so careful with international forwarding numbers), but there is no way to forward SMS

thank you!!!! now that makes sense and i understand.. MUCH APPRECIATED. So having a local sim (B) doesn't help at all when expecting a text to Home SIM (A)
The point of a dual sim is like you said..2 phones in one. but they operate independently.. For some reason I thought having dual sim would somehow help to get home texts when abroad. All it does is basically save you money so no need to get an extra phone when abroad

I have a dual SIM phone and (depending where you are!) it is not a one or the other deal. Both work at the same time although you may need to go into settings and choose which one you want as default for calls and data. I am not currently there but a month back I was using Smart and my Telcel at the same time and while I had both calls and data set for smart my Telcel worked fine when I needed a SMS for 2 step auth.

ressl wrote: ↑Fri Feb 09, 2024 10:12 pm Having 2 SIMs in one phone is basically just like having 2 phones in one. Both SIM are operating independently from each other, when it comes to incoming messages. If a SMS is sent to SIM (number) A, but A has not network, only B has, then you won't get the message.
For calls you can set up a forwarding (gets billed the same way, like you would do a call to this number you are forwarding, so careful with international forwarding numbers), but there is no way to forward SMS

Sorry to keep on about this but wanted to confirm something. If I understand correctly, If i get a text from my home country, the text can come thru via the local sim and use the money/data from the local sim?

is the above correct?

BklynBoy wrote: ↑Sat Feb 10, 2024 7:16 am
Sorry to keep on about this but wanted to confirm something. If I understand correctly, If i get a text from my home country, the text can come thru via the local sim and use the money/data from the local sim?

is the above correct?

Hi,

I've been reading the forum for entertainment since my visit a couple of years ago, I can help with this.

I'm in Hong Kong and facing the same issue, ie need to be running on a local sim but also need to receive texts for 2FA when doing certain transactions.

Dual SIM is the way to go as mentioned.

You have your own country SIM set to roaming so it can pick up texts but you set the mobile data to your local SIM. For me being on the O2 network in the UK, the texts I get are free (but obviously you need to check this) . Obviously I don't want to receive or make calls on my UK SIM, or send texts, as that costs money, but receiving is fine.

So for example, when I'm HK and I buy a UK train ticket online in advance to get me home from the airport in a couple of months, I do it on the phone using the local Internet or WiFi.

The UK visa debit transaction will send a verification text to my UK number which happens to already be in the same phone and is free to receive.