According to a report, Apple was working on an exciting feature for the iPhone, possibly debuting with the iPhone 11, but we're only hearing about it now that the company has apparently suspended the project.  According to The Information, citing "people familiar with the project," Apple was working on a function similar to the walkie-talkie. Not to be confused with Walkie-Talkie on the Apple Watch, this would have allowed users to send text messages to each other even in places where there is no mobile signal.
The function would instead have worked on long-distance radio waves, and there would be limits as to how far a message could be transmitted, making it essentially as a text version of a walkie-talkie.
Supposedly known as the OGRS Project (for out-of-network radio service), it is not entirely clear why The feature is now apparently on hold, but there are two possible obvious factors. On the one hand, the executive apparently behind him (Rubén Caballero), has left Apple.
On the other hand, the feature would apparently have used Intel modems, but Apple is set to return to Qualcomm modems from next year, and looking beyond it will probably be yours.
It is unclear if feature development will resume or when (if this information is supposed to be correct), but it might make sense for Apple to now wait until it starts building its own modems, so in order not to have than to modify the technology twice (first with the change to Qualcomm, and then to his own). In which case, we could be waiting for at least a couple of years.
Via Phone Arena