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It asks “what is your location”. Seems like there should be a way to quickly respond with GPS coordinates
Do you really think it doesn’t send a GPS location? The problem is that it’s not always accurate. It’s always smart to ask for more information and landmarks.
 
All else being equal, cellular data uses more battery than wi-fi, right? As such, the question about battery drain on satellite is quite valid. If I’m contacting emergency services, then of course, I get it—shut up and take my battery. But what about just walking/driving/hiking around in places with low/no cellular coverage? Do all those pings and pongs drain appreciably more battery? I have learned not to trust everything Apple claims about batteries…
 
All else being equal, cellular data uses more battery than wi-fi, right? As such, the question about battery drain on satellite is quite valid. If I’m contacting emergency services, then of course, I get it—shut up and take my battery. But what about just walking/driving/hiking around in places with low/no cellular coverage? Do all those pings and pongs drain appreciably more battery? I have learned not to trust everything Apple claims about batteries…
It doesn’t just “ping and pong” whenever you have no signal - you have to select emergency SOS via satellite and then it will begin trying to contact the satellites.

Battery life if you don’t use this feature should be exactly the same. While it’s actively being used it’ll be a big power draw though.
 
So.. which satellites does it connect to? Which ones allow sending and receiving of messages (my understanding is the GPS satellites are 'one way' to phones).
 
Cool feature (and it will save lives) but for those of us who sail or walk in areas without coverage there will still be a place for the non-emergency two-way satellite comms systems like Inreach, ACR Bivy, etc. It's good to have tracking and to be able to chat during those periods in the prelude to the "incident pit" when things might be going wrong but you're not quite prepared to call a full emergency.
 
Does the SOS have a major impact on the battery life? I wonder if it drains the battery a lot faster since it's communicating with the satellites and maintaining the signal. 📡🛰️
I would imagine it’s pretty battery friendly. I think looking for the signal is just receiving from the satellite. The data it transmits is intentionally small which is why it asks you everything upfront.

FWIW, I think this is a completely valid question. No idea why anyone would twist this into a debate about whether emergency help or your normal iPhone entertainment is more important. You said nothing to that effect.
 
You are not allowed to bring those devices on a cruise ship and suppose you go somewhere on that ship and (a) it has an accident or (b) you are at a port and do a day trip and they don't have such a device.

This is a valid question: it says US, what about international waters? Sure the satellite will work, but what happens then? I haven't researched yet.

[...]
I think it's pretty clear for now: since the US and international waters are not the same thing, it will not work. In other words, connection with a satellite would be possible but there are no agreements with agencies needed to offer help in such a situation.
 
Just tested the satellite using the demo. Worked perfectly and it was great to see how it would operate when used. Glad to have it and I hope to never need it. When XC skiing, hiking, or snowshoeing we are often in places without service. Large dead zones. I have rented satellite phones in the past when vacationing in very remote areas.
 
I still don’t see the test feature under emergency sos in settings.

That’s annoying.
 
I have Garmin inReach. If I didn’t do so much remote camping, I’d probably just go for the iPhone and skip the inReach cost. I’ve been in situations where I had inReach service for 5-10 minutes per hour because I was in a canyon. A storm was coming in and I was texting my sister for weather updates (this was before inReach had a weather function) and it was not ideal. In the end, the weather was a lot more severe than the reports my sister reported but obviously I’m ok. It was scary to hear a roaring sound ramp up in the pitch black of the night but exciting when we woke up in the morning and realized that we camped in just the right spot. I was talked into making a trip presentation for my kayak trip to a paddling group. A youtube version of the slideshow is here:


You can see all the waterfalls around us a little after the 8:20 mark

All that said, because I‘m an Apple fanboy, I’ll eventually have both when I upgrade my phone.
Most people I know that spend a lot of time in those conditions carry a real emergency device PLB as a backup. I like my InReach with the Earthmate app but I would never trust it or my phone alone.
 
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Does the SOS have a major impact on the battery life? I wonder if it drains the battery a lot faster since it's communicating with the satellites and maintaining the signal. 📡🛰️
I am a Search and Rescue volunteer in a Northern California county that has many rugged Sierra Nevada backcountry searches. One common denominator with many of our searches is people who have a cell phone but the battery has gone dead. When traveling in these areas with either weak or no cellular service, the battery drains much quicker than normal, even if you never pull it out of your pocket. It is quite common for us to reach out to the phone's carrier (i.e. Verizon or AT&T) and get ping results. Because the area is full of rocky canyons and such, these ping signals are nearly impossible to properly triangulate. Unless you plan your trip properly and have methods to supplement your phone's built-in battery, it would be better to use additional tools, such as a dedicated GPS unit with a satellite beacon system than rely on your phone. I am NOT saying that the SOS feature is a waste, I'm just pointing out the need to think of having a backup power source if traveling in areas without cellular service. A large number of our calls are related to poor planning.

I understand the appeal to go to these rugged, beautiful, secluded locations and people do it all the time without incident. Unfortunately, many people, especially those from urban areas that don't do so routinely, fail to plan properly before going.
 
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Most people I know that spend a lot of time in those conditions carry a real emergency device PLB as a backup. I like my InReach with the Earthmate app but I would never trust it or my phone alone.
But inReach has a SOS feature which doesn’t need the Earthmate app to function so I don’t see the need for a PLB. Seems like you are saying you would want an inReach and and a PLB as a backup. I’m saying I’ve been ok with the inReach so far and having emergency satellite service on my iPhone as a backup is a bonus. It is diminishing returns.
 
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The person who is asking about battery life has a great point. I don't think they are watching the YouTube.. or updating Facebook via satellite. Of course I am going to send an emergency SOS and try and save battery but no one had a great answer to this. Usually when one gets lost in the woods the original SOS is your location and what's wrong. The next couple of questions might be what's around you are you ok. So the question was..

What does this do to battery life?

Maybe I want to make a last message to my partner...

Then whoever I messaged will message me back to say they are on their way. The snarky comments on this forum are rude... all you arm chair "apple employees" need to take a break on the keyboard for a minute..
It’s using the same cell radio to send small messages (compressed, even, so it’s more efficient). It uses LTE band 53 which Globalstar was cleared to use. So by all accounts, it’s just like cellular, but with low signal strength since you’re much farther from satellites, and it’s only short burst messages, not a stream of data. Battery life should not be a huge issue just for contacting emergency services, should only take a few minutes to send and receive everything the emergency service needs.

And if you were wondering if it had any impact outside of an emergency, that would be a no. It doesn’t connect to satellites all the time, you initiate the connection by calling 911, then if the call fails it tells you to retry with satellite SOS. There’s no need for it to connect to satellites outside of the SOS feature. Or if you were in an area with no signal and you used the Find My feature to send your location over satellite (again, you initiate the usage of the feature, it’s not connecting to satellites in the background).

It does use your location by necessity so it may use more battery just by having location enabled, if you were in the habit of disabling location services normally.

And personally, I would not prioritize sending a “last message”. It’s not an ideal platform for that. The emergency rescuers may ask you questions about how you’re feeling or your environment, prioritize answering their questions, and in my experience, satellite messaging takes minutes per message to send and receive. You will be jamming up all your bandwidth to send such a message but your focus should be on your rescue and you may in fact be impeding your rescue! Write a note on your phone or a physical note if you want to!
 
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But does it work if your out sailing in international water?
No currently only in US and Canada - so I think the use case is very very small since most places even remote once you got signal in the US ... (here comes the well actually I know this spot where you don't)..... Where this would be REALLY useful is it was world wide - you could use 2000$ satellite phone when we are out, and that comes with a hefty 59 $ a month subscription. Last time I REALLY needed this was when our boat did not pick us up and we were in Greenland way way off the cell network then this would have been nice.. we were stranded in 36 hours with no food and only the water we could smelt. .. if it ever becomes tru world wide then it will be a nice feature... but also im guessing it won't work if you get to near to the Pooles like in greenland, since most satellites don't go that fare north in their orbit, so it can be hard even to get accurate GPS signal up there.
 
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