stackyFACTS
Technology

What an SMS delivery receipt really confirms

HERE’S THE INTERESTING PART

Your phone's delivery notification is lying about your friend actually seeing your text. A standard SMS delivery receipt solely verifies that the message packet successfully landed on the recipient's local cellular switching center. It provides absolutely zero confirmation that the device was turned on, that the user opened the text, or that they even glanced at the screen.

What an SMS delivery receipt really confirms
STACKY / Technology
One discovery leads to another.

Keep exploring facts in this topic.

Technology →
STACKY FOR IPHONE

A bigger world.
One discovery
at a time.

Keep discovering with Stacky. Interesting facts in an app that is always within reach.

Download on the App Store
ONE MORE DISCOVERY?

Keep exploring

All in this topic →
VoLTE networks treat voice calls as standard data
Technology

VoLTE networks treat voice calls as standard data

Voice calls used to be special, but now your voice is just treated like a compressed image file. Voice over LTE (VoLTE) abandons the dedicated voice circuits…

Discover more
Neil Papworth, a twenty-two-year-old software programmer, sent the very first Short Message Service text on December 3, 1992, typing the phrase 'Merry Christmas' on a personal…
Technology

Neil Papworth, a twenty-two-year-old software programmer, sent the very first Short Message Service text on December 3, 1992, typing the phrase 'Merry Christmas' on a personal…

Neil Papworth, a twenty-two-year-old software programmer, sent the very first Short Message Service text on December 3, 1992, typing the phrase 'Merry…

Discover more
Friedhelm Hillebrand, a brilliant German telecommunications researcher, established the strict 160-character limit for standard SMS text messages in 1985 by sitting at his…
Technology

Friedhelm Hillebrand, a brilliant German telecommunications researcher, established the strict 160-character limit for standard SMS text messages in 1985 by sitting at his…

Friedhelm Hillebrand, a brilliant German telecommunications researcher, established the strict 160-character limit for standard SMS text messages in 1985 by…

Discover more
Your emoji is really just a number
Technology

Your emoji is really just a number

That laughing-crying face isn't a picture; it's just a soulless numerical assignment. Under the hood, emojis are dictated by the Unicode standard, which…

Discover more
Audio bit depth dictates available dynamic volume ranges
Technology

Audio bit depth dictates available dynamic volume ranges

The difference between an agonizingly loud blast and total silence is strictly a matter of data allocation. Bit depth determines the sheer number of possible…

Discover more
How Microsoft SEAL computes on encrypted data
Technology

How Microsoft SEAL computes on encrypted data

Historically, if you wanted a cloud server to calculate your taxes, you had to decrypt the data first, exposing it to hackers. Microsoft SEAL uses homomorphic…

Discover more
StackyMore discoveries in the app
Download on the App Store