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Contributor

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11 Messages

Sat, May 16, 2020 12:39 AM

wi-fi calling, esim / dual-sim and international use (overseas)

Hi, sorry if this question already discussed here biut please help to understand:

i.e. I have dual sim iphone where eSim is ATT and physical slot given to local foreign sim card.

I found that: https://www.att.com/features/wifi-calling/ - While traveling in many countries outside the U.S., your phone will automatically use the Wi-Fi network instead of a mobile network when both are available. (Wi-Fi Calling is restricted in some countries.)

Does this mean:

1. If i have local foreign sim card , while there, as p[romary for both data and voice and text and if my phone is in wifi network the att-wi-fi will take over and call will be free of roaming charge?

2. same scenario - no wi-fi - will be the att wi-fi calling using data plan from local non-att sim?

How does it work?

Also - if there an app that allows wi-fi calls over wi-fi for iphone?

The idea is to minimize roaming charges while abroad.

thanks!

Responses

Brand User
ATTHelp

Community Support

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140.3K Messages

6 months ago

Hello, @AndySich,

 

Thank you for reaching out. Here's information on Wi-Fi Calling. If the Wi-Fi network permits you to use Wi-Fi Calling, then you would be charged as you would normally. If you don't have the AT&T Day Pass or the AT&T Passport, you will accrue international charges.

 

Here are the countries covered by the two plans so you can decide which of the two international planes are best for you.

 

If you have a SIM card from a non-AT&T company in your iPhone, you'll need to check with them to see how it will work for your charges.

 

Have a great week.

 

James, AT&T Community Specialist

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*I am an AT&T employee, and the postings on this site are my own and don't necessarily represent AT&T's position, strategies or opinions.

Contributor

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11 Messages

@ATTHelp - James, sorry, I checked the links your provided, but they are not helpful.

Could you please answer the specific questions above?

Brand User
ATTHelp

Community Support

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140.3K Messages

Hello, @AndySich,

 

Unless you have an international plan for your iPhone, you'll pay international charges with Wi-Fi Calling. If you're using the international SIM, you'll need to reach out to that provider to find out what they cover.

 

Thank you.

 

James, AT&t Community Specialist

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*I am an AT&T employee, and the postings on this site are my own and don't necessarily represent AT&T's position, strategies or opinions.

Contributor

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11 Messages

still not helpful. Firstly - please reread question- it is about technology, not charges. Need to understand if , with WiFi calling enabled, att sim line will use data from another sim as WiFi or not.

lizdance40

ACE - Sage

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79.4K Messages

6 months ago

@you asked :
". If i have local foreign sim card , while there, as primary for both data and voice and text and if my phone is in wifi network the att-wi-fi will take over and call will be free of roaming charge?"
IPhone is dual sim stand by. It can only use one Data Network at a time, so once you select a local Data Network you will have no data charges on your AT&T SIM card
AT&T Wi-Fi calling does not give you free roaming. ATT Wi-Fi calling is just another way to connect to the AT&T network. Calls using Wi-Fi calling are the same as if you were in the United States. That means calls from a foreign country to the United States using Wi-Fi calling are as domestic calls and free. Calls within that foreign country using Wi-Fi calling are charged as long distance - so use the local sim for incoming and local calling.


2. "same scenario - no wi-fi - will be the att wi-fi calling using data plan from local non-att sim?"
If the phone can be set up to do do, yes. I understand it's possible. Or You could use a second phone with local sim to create a Wi-Fi network while using the AT&T SIM to make Wi-Fi calls.


" Also - if there an app that allows wi-fi calls over wi-fi for iphone?"
No, it's a feature on the phone, not an app. Like Bluetooth. And it has to be set up while you are still in the United States in order to use it.

The idea is to minimize roaming charges while abroad.

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Contributor

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11 Messages

thank you, @lizdance40 , somewhat helpful.

But as for q1 - it states on ATT website that - that: https://www.att.com/features/wifi-calling/ - While traveling in many countries outside the U.S., your phone will automatically use the Wi-Fi network instead of a mobile network when both are available. (Wi-Fi Calling is restricted in some countries.) - so if WiFi is available and I am abroad att line will be connected via WiFi, not cellular signal (regardless of dual sim or not) - correct? -

if yes -

As for q2-same scenario as above but data comes from local sim, not WiFi -will att call go through data from another card as Wu-ficallingor actual WiFi is needed?

Hopefully this is worded better than original question

Thank You

GLIMMERMAN76

ACE - Expert

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20.7K Messages

This is really a question for APPLE not ATT since they code the software and they make wifi calling take over a little more that it should in my eyes. If your worried about wifi calling causing roaming charges then turn it off.

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Brand User
ATTHelp

Community Support

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140.3K Messages

Hello there @AndySich!

 

Here's how Wi-Fi Calling works on Dual SIM devices: While in the U.S., AT&T Wi-Fi Calling is cellular preferred, meaning when there is both a strong cellular signal and strong Wi-Fi signal, the phone defaults to the cellular network.

 

To "force" the device to use Wi-Fi Calling, customers can put the device in airplane mode and then turn on Wi-Fi service. Calls drop if the customer loses Wi-Fi coverage with the phone in airplane mode.

 

When traveling outside of the U.S., in countries where Wi-Fi Calling is available, AT&T Wi-Fi Calling is Wi-Fi preferred, meaning the phone will use cellular only when there is no Wi-Fi network available. Please be advised that International Long Distance (ILD) charges will apply when a customer is out of the U.S. and they use Wi-Fi Calling to contact a phone number in the country they're visiting (i.e. while in Paris, France a customer decides to contact a restaurant in Paris to make dinner reservations). Customers must be logged into a Wi-Fi Network to use Wi-Fi Calling on that network.

 

To avoid unexpected ILD charges when outside of the U.S., use Wi-Fi Calling only for calls to the U.S. Be sure to turn off Wi-Fi Calling for all other calls if you have an international talk, text, and data plan.

 

Hope this helps.

 

Lar, AT&T Community Specialist

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Contributor

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11 Messages

thank you, , Lar, for the answer on first question .

What about second? Will WiFi calling work if data connection is through second SIM card or actual Wi-Fi connection is needed?

In Apple instruction it is unclear as it says Sim from carrier 1 can use data of carrier 2 for WiFi calls?

Contributor

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11 Messages

also - Lar, you say - Be sure to turn off Wi-Fi Calling for all other calls if you have an international talk, text, and data plan. - how it is related to WiFi calling? Is it not the same for all calls, like if I am in France and decide to call French number From ATT number I will have ILD charge anyway , or not?

Contributor

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11 Messages

sorry, Lar, found, yes you are correct, it changed , thank you. But still if you can clarify q2?

Contributor

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11 Messages

this triggered one more question about IDP - I understand that sending text, answer call or use data triggers $10 charges. But will it be triggered in case of receiving text or receiving but not answering call?

GLIMMERMAN76

ACE - Expert

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20.7K Messages

you cant use data from sim 2 to make a wifi call on sim 1 the phones are dsds aka dual SIM dual standby.

(edited)

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lizdance40

ACE - Sage

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79.4K Messages

"also - Lar, you say - Be sure to turn off Wi-Fi Calling for all other calls if you have an international talk, text, and data plan. - how it is related to WiFi calling? Is it not the same for all calls, like if I am in France and decide to call French number From ATT number I will have ILD charge anyway , or not?"

If you are making local calls and you are going to use your local SIM card not your AT&T SIM card and not Wi-Fi calling. Any calls from your AT&T SIM card will incur charges. Wifi calls =ILD, without wifi = roaming. If you have a roaming plan but no long distance plan, you would incur LD charges at $3 per minute to most non US numbers.
(but you're going to use your local sim, right?)

🐾 I don’t work for AT&T or any carrier. Never have, never will. My replies are based on experience and reading content available on the website. If you posted personal information, please edit and remove.

Award for Community Excellence 2020 Achiever*
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lizdance40

ACE - Sage

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79.4K Messages

"this triggered one more question about IDP - I understand that sending text, answer call or use data triggers $10 charges. But will it be triggered in case of receiving text or receiving but not answering call?"
No charge to receive text.
Most countries will not, and should not trigger a charge for unanswered calls.

🐾 I don’t work for AT&T or any carrier. Never have, never will. My replies are based on experience and reading content available on the website. If you posted personal information, please edit and remove.

Award for Community Excellence 2020 Achiever*
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Contributor

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11 Messages

thank You!

lizdance40

ACE - Sage

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79.4K Messages

Thank you for asking all these really great questions. I have seen far too many people roam without knowing what they are doing, and then blaming the charges they incur on their carrier.
Safe travels!

(edited)

🐾 I don’t work for AT&T or any carrier. Never have, never will. My replies are based on experience and reading content available on the website. If you posted personal information, please edit and remove.

Award for Community Excellence 2020 Achiever*
*I am not an AT&T employee, and the views and opinions expressed on this forum are purely my own. Any product claim, statistic, quote, or other representation about a product or service should be verified with the manufacturer, provider, or party.

New Member

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1 Message

a month ago

I tried using an eSim internationally and it was a very expensive mistake. Even though I had data turned off and wifi calling turned on, I got hit with $300 in charges for phone and data use. I called ATT to complain and they said that you get charged for calls even if they are wifi calls.

My old system was to have an ATT phone on airplane mode with wifi turned on. That worked great. The esim was an utter disaster.

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