Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.


T-Mobile and SpaceX today announced a plan to offer smartphone connectivity nearly anywhere in the U.S. with a new "satellite-to-cellular" service.

tmobile-spacex-satellite-connectivity.jpg

The new technology will leverage SpaceX's second-generation Starlink satellites in low Earth orbit and T-Mobile's nationwide mid-band 5G spectrum to provide "near complete coverage" in most areas across the U.S., in addition to territorial waters. If successful, the technology would eliminate "mobile dead zones" and keep customers connected beyond the reach of cell towers, which would be especially helpful in emergency situations.

T-Mobile and SpaceX said they hope to establish reciprocal roaming agreements with international carriers to offer the service globally in the future.

"The important thing about this is that it means there are no dead zones anywhere in the world for your cell phone," said SpaceX CEO Elon Musk, in a press release announcing the plan. "We're incredibly excited to do this with T-Mobile."

Below, we've outlined some key details about the T-Mobile and SpaceX plans and what the launch of the service will mean for iPhone users.

Will the satellite connectivity work with iPhones?

T-Mobile said the "vast majority of smartphones" already connected to its network will be compatible with the new "satellite-to-cellular" service, and this will presumably include iPhones. We've reached out to T-Mobile and Apple for clarification, but the companies did not immediately respond to our requests for comment.

T-Mobile said satellite connectivity will use a smartphone's existing cellular chip and will not require a Starlink terminal or any other hardware.

Will the satellite connectivity require an iPhone 14?

As mentioned above, T-Mobile said the "vast majority" of existing smartphones will be compatible with its satellite connectivity service right out of the box, so it does not sound like the feature will require Apple's upcoming iPhone 14 models.

Bloomberg's Mark Gurman has reported that iPhone 14 models could feature satellite connectivity for emergency use, but he said that Apple's partner would likely be satellite company Globalstar, rather than SpaceX, so the feature may be unrelated.

During a press event in Texas, T-Mobile CEO Mike Sievert also said that the carrier has yet to start working with other companies on how they will integrate the technology, further suggesting that Apple is not currently involved with the plans. Of course, Apple could choose to partner with T-Mobile and SpaceX to fully support the service on iPhones in the future, even if the companies have yet to discuss the matter.

Given the service will leverage T-Mobile's mid-band 5G spectrum, it's possible Starlink satellite connectivity will require an iPhone 12 or newer, but we'll have to wait for the companies to share additional details about the technology.

How will the technology work?

SpaceX plans to have a constellation of second-generation Starlink satellites in low Earth orbit with advanced antennas that smartphones can connect to via T-Mobile's mid-band 5G spectrum without any additional hardware. T-Mobile said the service will provide "nearly complete coverage almost anywhere a customer can see the sky," and Elon Musk said the service should work when a person has the phone in their pocket or is in a vehicle.

What is the purpose of satellite connectivity?

T-Mobile and SpaceX said the satellite-to-cellular service is designed primarily for areas without existing cell network coverage, to eliminate mobile dead zones. The service is not intended to be a substitute for much faster cell networks in urban and suburban areas, but instead will ensure that people can stay connected in areas without cell towers for basic communication by text message and eventually phone calls.

When and where will the service launch?

T-Mobile and SpaceX plan to launch the service in beta by late 2023, starting in select areas of the U.S. The service will eventually cover most areas of the continental U.S., Hawaii, parts of Alaska, Puerto Rico, and U.S. territorial waters.

T-Mobile and SpaceX said they hope to establish reciprocal roaming agreements with international carriers to offer the service globally in the future.

How much will the service cost?

T-Mobile CEO Mike Sievert said the carrier plans to offer Starlink satellite connectivity on its "most popular plans" for no additional charge. For some lower-priced plans, Sievert said T-Mobile may charge a monthly fee to access the service, with pricing that would be "far less" expensive than existing satellite service providers.

Will the service work for phone calls and text messages? What about iMessage?

Starlink's direct satellite connectivity to smartphones will initially work with SMS and MMS text messages and "participating messaging apps," according to T-Mobile and SpaceX. The announcement did not name any participating messaging apps, so it's unclear if Apple's iMessage service will be supported at launch.

In the future, the companies plan to "pursue the addition of voice and data coverage" for phone calls, web browsing, and more, but speeds would be limited.

How fast will the satellite connectivity be?

Second-generation Starlink satellites will be able to provide data speeds of up to 2-4 Mbps to each cell zone, which would be suitable for text messages and eventually phone calls when supported, according to Elon Musk.

Exact speeds would depend on how many T-Mobile customers are simultaneously using the service in a given cell zone. If a cell is not very busy, Musk said there is the potential that users could play "a little bit" of video in the future, but the service is not intended for this sort of usage and is instead designed for basic communication.

Article Link: T-Mobile and SpaceX's Satellite Connectivity Likely Won't Require an iPhone 14
This is actually huge. I love this!! And at no extra charge? That’s insane. Gotta love what T-Mobile is doing lately the last few years.
 
"Exact speeds would depend on how many T-Mobile customers are simultaneously using the service in a given cell zone."
So, a few hundred people on a ship using T-Mobile would likely render it useless.
On a ship, they would have a base Starlink station capable of handling thousands of calls.
 
It's T-Mobile you should worry about more. The amount of disconnects I got with their service while signal was optimal (cell tower in sight) was amazing. A few months ago we had a power outage in the area and apparently their cell tower hardware power was out too.

Eventually T-Mobile can be removed anyway when small mobile phones are able to use satellites directly.
I have had more issues with Verizon and ATT than with T-Mobile. It all depends on specific locations and phones.
 
This further shows how much profit/padding is built into upper tier T-Mobile (and other carrier) plans if they are able to offer it for "free." Smartphone satellite tracking and texting plans currently run around $15 to $65+ per month depending on usage level. Of course, T-Mobile's large customer base will allow them to spread costs over tens of millions of accounts, and only a small percentage of their customers would likely access the service anyway.
 
The technology and the future applications behind it are exciting. The fact that it's T-Mobile is disappointing. I'm currently on T-Mobile and can't wait to get away. Sure, we have some form of signal pretty much everywhere we go but that apparently doesn't mean it's usable. Dropped calls, non-functioning internet, etc. Hell, my data connectivity dropped down to Edge the other day. Edge. In 2022.
 
  • Like
Reactions: Wags
It would be interesting to know how long this will take to implement, and why the announcement happened now.
MacRumors did a decent write up here, but they neglected to mention how enormous the satellites will be.

This isn't the current generation of satellites that are being launched right now which fit in the Falcon 9's fairing.

This is the second generation of satellites which are 40 feet by 16 feet. That's roughly the size of shipping containers and/or mobile homes.

SpaceX isn't going to be able to launch them in secret.

And launches should be starting shortly. They're aiming to begin monthly orbital attempts before the end of this year. Once one of them is successful, I expect they'll start putting prototype satellites onboard. So depending on how quickly they move, we could see a few prototypes of these things in LEO before the end of the year.
 
  • Love
Reactions: ApplesAreSweet&Sour
Reading this while on a cruise. I could see this being super nice for cruise guests and employees!

I was talking with some of the staff and they said they have to pay for wifi - lots of times just to video call with their families as they do 6 month shifts.

I thought that too, but it did say US territorial waters. There’s probably a little bit of bleed as with any border, but I wouldn’t expect to have service standing on the pool deck in the water between even the USVI and St Maarten.
 
Well, good! I'm glad that TMO customer service took my "Exit interview" advice to heart and is doing something about it. TMO claims with their charts that 99% of Minnesota is covered by some service or another of theirs, whether its their own towers or roaming. I routinely drive in areas where my newest iPhone 12 which I bought just to get better signal gets nothing. For miles. and miles. fast spans of areas that are completely dead, but show covered on their maps. So, I informed them of this when I canceled and moved to verizon, which amazingly DOES get coverage in those areas, with the same dang iPhone. So can't blame it on the phone anymore :)

Oh, and I'm kidding about them listening to me. I know they filed my complaint into the little round open top filing cabinet next to the desk along with all the others. Amazed someone hasn't sued them for false advertising yet. This seems an extreme way of closing the gaps, I guess we are at the point where shooting more space junk up there is cheaper than building towers. Visual sky pollution and light pollution. Its the next big thing.
 
I just dont understand how a cell phone can transmit a signal to a low earth satellite 300 miles up? It says it will work with t-mobile's network but if it gets rid of dead zones, that means there are no t-mobile towers to relay the signal up to space?
 
Wonder if Apple will get mad at T-Mobile and Space X (Elon Musk) for announcing this satellite to cellular connectivity. They are throwing shades.

Why was this not announced last week or so? Why right after the Apple event? 😂
What are you talking about? The Apple event has not happened yet. This event was announced before Apple even sent out their invites.
 
I suppose ”no dead zones anywhere in the world” here means.. the United States except Alaska and other assorted places?

Well, there are 2 parts of it. T-Mobile can only operate in the US where they have the spectrum license. The idea is to work with all carriers across the globe to create roaming agreements.
 
Satellite communications can still be done through tree cover. I’ve been able to do Inreach through trees and even indoors but it can make a normally <1 minute message take 30 minutes.
Iridium satellite signals can be bad enough with obstructions but Starlink is notoriously bad when any obstructions are introduced including any trees.
 
If Elon Musk is involved then I won’t get my hopes up for whatever this service is.
I will see your assertion and raise you: if Elon Musk is involved then I do not want anything to do with it... and my only signal at home currently is a transient 1-2 bar 4G signal from Verizon.
 
Wonder if Apple will get mad at T-Mobile and Space X (Elon Musk) for announcing this satellite to cellular connectivity. They are throwing shades.

Why was this not announced last week or so? Why right after the Apple event? 😂
Why? It is not a phone-specific feature... and Elon is involved. The feature depends on a band of frequency spectrum currently allocated to T-Mobile.
 
The way I’m reading this is that they think they can actually simply utilize some of the current 5G radio spectrum and frequency to manage some very small data connectivity with a STARLINK LEO satellite about 200 miles up hopefully with an unobstructed view of the sky/satellite. 200 miles is way outside of the any typical ground based cellular network, where historically 50-75 miles is at the very outside edge of ‘usable’ capability. MAYBE they think with some phone hardware bursting that they might be able to lock on for very very small data transmission. Would be very spotty at best, but yes most likely usable and give SOME type of coverage anywhere where the starlink constellation is flying over..
 
T-Mobile is absolute garbage in my area.

If this actually works, does that mean that T-Mobile might be work trying out?
I find that they have pretty dang good coverage on 5G but 4G is very lacking. Did you try them in your area since their 5G rollout? My whole family just switched to them from Verizon and we were able to save a metric ton of money and have so far had at least comparable if not better coverage/performance. My dad is on our plan and does a lot of driving to the middle of nowhere and smaller towns so he will be the real test next time he has such a trip.
 
Is this to pre-empt an announcement from apple about something similar? Very interesting and great development to get rid of dead zones for many. As a frequent camper, hiker, and kayaker switching to T-mobile is something i need to seriously consider.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.