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I can't speak for the AW, but I know that with T-Mobile as long as you can dial thru from and to the regular number, there is no charge for roaming. It's when you dial internationally to and from is when they hit you with the charge. I experienced that last year when my wife was visiting overseas.
 
i dont think international roaming is supported, nor Apple Watch purchased from one country or region can use cellular feature on another country or region either.
 
Not at this time, because the SIM forwarding technology used to link your Watch eSIM and your iPhone SIM doesn’t support roaming.
 
It says in the fine print on apple.com/watch/cellular that international roaming is not supported.
So how does iW 'fall detection' work or not work when away from one's home country? Would it only work if iP in BT range and connected to Wifi or using roaming cellular data?
In a related note, do you manually put your iW in airplane mode while flying or have the iW set to mirror you iP? I have done neither in the past, but during my recent trip to Rome wondered if iOS 15 had changed something.
 
nor Apple Watch purchased from one country or region can use cellular feature on another country or region either.
That’s not quite true …… if you add an esim in the country you want to use it the AW works fine on cellular assuming the model is compatible with that market.

I’ve used an AW purchased in UAE in the UK with a UK Carrier esim (not roaming)
 
It is not supported. Have tried using my US Apple Watch in Canada and Mexico through T-Mobile and it will not work.
 
The reason roaming isn't supported is because apple watches with celluar models are region specific. It is divided between Americas, China Mainland, Europe/Asia Pacific. It's a hardware limitation. Unlike the iPhone, there's no "world wide" capable Apple Watch. This is as per Apple's own support documents.

I've also read from my carrier that Apple Watch plans are nation wide only.

However, the watch can still "roam" when you have your iPhone nearby and your iPhone is on another carrier in another region.
 
There are overlapping bands on the iPhone and AW that should cover many area’s…especially band 5…
 
The reason roaming isn't supported is because apple watches with celluar models are region specific. It is divided between Americas, China Mainland, Europe/Asia Pacific. It's a hardware limitation. Unlike the iPhone, there's no "world wide" capable Apple Watch. This is as per Apple's own support documents.

I've also read from my carrier that Apple Watch plans are nation wide only.

However, the watch can still "roam" when you have your iPhone nearby and your iPhone is on another carrier in another region.
Not quite right ?
 
Roaming is not supported, but since S6 (I thought it was since S5) international emergency call are supported:
 
So how does iW 'fall detection' work or not work when away from one's home country? Would it only work if iP in BT range and connected to Wifi or using roaming cellular data?/quote
It will work when within range of the iPhone (assuming the iPhone can make calls locally) or when connected to a wifi network and having Wi-Fi Calling enabled. I've never had a problem with that since I never go anywhere without my iPhone (well, I accidentally leave my iPhone behind about two or three times annually, almost always when I run out of the house on a short errand to the local downtown district, which is only two blocks from home).

In my personal case the habit of carrying a cell phone at all times is as ingrained as carrying my wallet. I understand there are some types of exercise/workout where carrying an iPhone is not practical, but since I'm a walker/hiker that doesn't affect me. Around home and the office I'm usually within Bluetooth range, but when I'm not I'm still connected to the Wi-Fi network (Wi-Fi Calling).

After having a first-generation Apple Watch (no cellular option available) I decided to buy a Series 4 with GPS + Cellular, just in case I decided to add a cellular plan at a later date. I haven't - $120/year for the cellular plan works out to $40 for each of the three times I accidentally leave home without my iPhone. Since those iPhone-free incidents each last no more than a half-hour, that's $80/hour for cellular service.

In a related note, do you manually put your iW in airplane mode while flying or have the iW set to mirror you iP? I have done neither in the past, but during my recent trip to Rome wondered if iOS 15 had changed something.
Back when I was flying frequently Apple Watch did not yet exist, so I've never given this much thought.

However, Airplane Mode does not disable Bluetooth by default - you must choose to disable it manually. Per Apple's Airplane mode support article https://support.apple.com/HT204234 (emphasis added)

When you turn on Airplane Mode, it turns off all radios except for Bluetooth. If you turn off Bluetooth while you're in Airplane Mode, your device will remember the next time you turn on Airplane Mode.
Now, this is where it gets interesting - When you Mirror Airplane Mode for Apple Watch, it only mirrors the overall OFF/ON status of Airplane mode - it does not affect whatever customizations you've performed separately on each device. In other words, the Watch does not duplicate the Wi-Fi and Bluetooth statuses chosen on the iPhone.

So, you can have your Watch set to leave Bluetooth and Wi-Fi ON in Airplane Mode, but have your iPhone set up to disable both Wi-Fi and Bluetooth in Airplane Mode.

my personal feeling/rationalization is that due to their lower power levels, Bluetooth and Wi-Fi don't pose the same risk to aviation electronics as cellular - I have Control Center configured so that Airplane mode on my iPhone only disables Cellular. Since my Watch doesn't have a cellular data plan I see no particular reason to Mirror iPhone, or to enable Airplane Mode on my Watch.
 
It will work when within range of the iPhone (assuming the iPhone can make calls locally) or when connected to a wifi network and having Wi-Fi Calling enabled. I've never had a problem with that since I never go anywhere without my iPhone (well, I accidentally leave my iPhone behind about two or three times annually, almost always when I run out of the house on a short errand to the local downtown district, which is only two blocks from home).

In my personal case the habit of carrying a cell phone at all times is as ingrained as carrying my wallet. I understand there are some types of exercise/workout where carrying an iPhone is not practical, but since I'm a walker/hiker that doesn't affect me. Around home and the office I'm usually within Bluetooth range, but when I'm not I'm still connected to the Wi-Fi network (Wi-Fi Calling).

After having a first-generation Apple Watch (no cellular option available) I decided to buy a Series 4 with GPS + Cellular, just in case I decided to add a cellular plan at a later date. I haven't - $120/year for the cellular plan works out to $40 for each of the three times I accidentally leave home without my iPhone. Since those iPhone-free incidents each last no more than a half-hour, that's $80/hour for cellular service.


Back when I was flying frequently Apple Watch did not yet exist, so I've never given this much thought.

However, Airplane Mode does not disable Bluetooth by default - you must choose to disable it manually. Per Apple's Airplane mode support article https://support.apple.com/HT204234 (emphasis added)


Now, this is where it gets interesting - When you Mirror Airplane Mode for Apple Watch, it only mirrors the overall OFF/ON status of Airplane mode - it does not affect whatever customizations you've performed separately on each device. In other words, the Watch does not duplicate the Wi-Fi and Bluetooth statuses chosen on the iPhone.

So, you can have your Watch set to leave Bluetooth and Wi-Fi ON in Airplane Mode, but have your iPhone set up to disable both Wi-Fi and Bluetooth in Airplane Mode.

my personal feeling/rationalization is that due to their lower power levels, Bluetooth and Wi-Fi don't pose the same risk to aviation electronics as cellular - I have Control Center configured so that Airplane mode on my iPhone only disables Cellular. Since my Watch doesn't have a cellular data plan I see no particular reason to Mirror iPhone, or to enable Airplane Mode on my Watch.
As I just replied above, it does support international emergency call. I would imagine that would also be the case, when fall detection triggers the call, but have not found any clear evidence, and it will not send a message to your contacts with position information. (It also was introduced with S5 as I remembered).
 
For me this is the next killer feature, roaming on the watch. Hopefully sometime, and not too far away. My S5 is still great though.
 
For me this is the next killer feature, roaming on the watch. Hopefully sometime, and not too far away. My S5 is still great though.
I don’t know but I would imagine technically it’s possible but the implementation is more complex for the carriers.
 
I don’t know but I would imagine technically it’s possible but the implementation is more complex for the carriers.
If there’s a market they will come for sure. The largest markets for Apple don’t need roaming as much as we do in smaller countries/markets where it’s perfectly normal that your commute is cross borders.

The carriers are here to serve us customers, not the other way around. ?
 
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