Hello Junzzzzz,
Welcome to the community!
@Junzzzzz wrote:...The other three lines are with public mobile...
Firstly, as far as I am aware, Public Mobile does not offer International roaming.
I understand you might have been charged for roaming the same day you received the notification message. However, to reiterate, receiving that notification does not, in itself, trigger the Fido Roam charge. That said, it does mean that your Fido SIM connected to a foreign network. Was your phone still in Airplane or Flight mode? If it was, your phone shouldn't have been able to connect to the networks.
Have you had a chance to view the details of your bill to see what triggered the Fido Roam charge? You should be able to view those details via My Account.
What phone are you using? From what you have noted, it appears that your phone is a dual-SIM model. I understand your phone is set to use a different SIM for data. However, depending on how the phone handles its dual-SIM functionality, it's possible that setting is only for user data. It may not apply for system or app data usage. It's possible that when your Fido SIM connected to the networks (ie received the notification), your phone also used data to synchronise its settings.
It's important to note how your phone functions when outside of Canada. Does it connect to networks despite being in Airplane or Flight mode? Do system functions use data regardless of data or data roaming settings being disabled? If it is connecting to the networks or using data when it's not supposed to, then that's an issue with the phone. The networks will only charge for roaming when usage of services is detected. Have you considered contacting the phone manufacturer to see how they designed the phone to deal with those situations?
If you do not intend on using your services while outside of Canada, you might consider contacting customer service to place a roaming block on your account.
Hope this helps 😀
Cheers
Hello again,
Thank you for the additional information.
@Junzzzzz wrote..However, the "cellular data" is set to overseas SIM card, and "auto data switching" set of off...
Have you considered contacting Apple to see whether that setting prevents system data usage from being used on the other SIM? There are many instances of 'data leakage' with Apple devices despite cellular data and roaming data settings disabled. One theory suggests that iPhones connect to Apple servers to get system related information which bypasses the phone's cellular data and roaming data settings. Apparently, Apple doesn't consider this transfer of information to be data. On the other hand, many providers do consider it to be data usage. Is your phone connecting to Apple servers using your Fido SIM even though your auto data switching setting is disabled?
@Junzzzzz wrote:..What I think this setting does is allows phone calls to show up, and caller ID to show up. And it does, so long as I don't push the Reject or accept call button and just let it ring, I won't have any charges...
When your phone is connected to a foreign network, unanswered calls will not trigger the Fido Roam charge. More specifically, rejecting calls no longer triggers the roaming charges (see here).
@Junzzzzz wrote:..I have crossed the boarder between HK and China a few times, but this Shouldn't cause any data usage..... but it does, somehow, without me knowing, even though my Phone settings remain unchanged.
I understand it's frustrating having your phone behave unexpectedly, especially without our knowledge. Perhaps your phone shouldn't have had any data usage. However, if usage was dectected by the networks, your phone did use the data. Have you checked your data usage on your phone to see what services used the data? Can you disable data and/or roaming data for that SIM? Admittedly, that wouldn't necessarily prevent the data leakage mentioned above.
Hope this helps 😀
Cheers
Hey @freesoul
Welcome to the Community 
I have moved your post here since it's in regards to the same matter.
You are indeed correct as to the type of usage that would trigger Fido Roam. That being said rejecting a call without replying (using an automated reply for example) would not trigger any charges.
You would receive a message when you first activate Fido Roam. We also send you a message to let you know of the rates when you leave the country.
Hope that helps!
Hey @123anderson!
Welcome to the Community
This is definitely not how Fido Roam is billed. What triggers the charge is really just usage. That means data usage, outgoing text messages, outgoing calls and answered incoming calls.
Turning on your phone would not trigger a charge. If data was turned off and that no other usage was made, you should not have been billed at all.
We'd need to check out your account to confirm the details. It may have been a glitch that has been corrected but we can assure you that usage such as taking pictures or playing around with your phone with the data off would definitely not trigger the Fido Roam charge for the day.
Hope that clarifies!
I can assure you that connecting to a foreign network without using anything will not trigger any charges.
I would be happy to take a look at your account and give you more info on what happened there.
I'll send you a PM here for that in just a moment.
Chat soon!
You're quite welcome @123anderson!
Let us know if you have any other questions and/or concerns.
We're always happy to lend support.
