NYSE: IDT
Products

Discover how our products can revolutionize the way you communicate and collaborate.

Voice

Explore our advanced voice solutions designed to optimize your communication workflows.

Diverse range of DID number solutions designed to enhance your communication capabilities.

Experience unparalleled communication efficiency with our advanced SIP Trunking Solutions.

Cutting-edge technology to proactively detect and neutralize spam flags on your DID Numbers.

Messaging

Wherever your audience is, our platform ensures seamless messaging across diverse channels.

Build customer journeys by fostering interactive conversations, all within the framework of your app.ย 

Connect with your audience in a simple and effective way through our cutting-edge SMS platform.ย 

BYOC

Harness the power of IDT as your chosen carrier while leveraging your platform’s advanced features and services.

Integrate Twilio with our robust carrier routing platform to achieve unparalleled Voice termination system.

Experience reliable and high-quality communication services while leveraging the advanced capabilities of Genesys.ย 

Integrate IDT with the collaborative strength of MS Teams, unlocking efficient and feature-rich communication.ย 

Experience the power of our carrier network seamlessly connected to Plivo through our cutting-edge BYOC solution.ย 

Tools

Experience the power of our online voice tools, designed to simplify communication management.ย 

Ensure the authenticity and integrity of outbound calls with our STIR/SHAKEN Verification Check tool.ย 

User-friendly tool to verify the reputation of your business number, ensuring that it remains trusted.ย 

Compare and gain insights into outbound call expenses, optimize budget, and make informed decisions.ย 

Easily estimate and compare the costs associated with different DID numbers providers.ย 

Get information about any phone number and check if it is available on WhatsApp.

Generate custom SMS templates.ย 

Learn

Empower yourself with the resources you need to thrive in the dynamic landscape of communication.

Articles covering a wide range of topics.

Get answers to common queries.

Find instructions to make the most of our products.

Discover telecom insights and trends.

Find definitions of popular telecom terms.

Explore how our solutions have helped businesses.

Latest telecom trends, innovations, and market insights.

Company

A global telecom partner built to meet your needs.ย 

Discover the story behind our commitment to delivering innovative solutions to connect people and businesses worldwide.ย 

Learn about our robust network infrastructure that spans across the globe, ensuring reliable and secure connectivity.ย 

Got a question, feedback, or need assistance? Our dedicated team is here to help!

Find partners or sign up for partnership programs.

NYSE: IDT
LEARN

Flash SMS

In this article

Flash SMS, also known as Class 0 SMS or Flash Messages, is a type of SMS (Short Message Service) that is displayed directly on the recipient’s mobile screen without being stored in the inbox. Unlike regular SMS messages that are saved in the inbox and can be read at any time, Flash SMS messages are typically displayed immediately upon receipt and often override other activities on the recipient’s device screen.

Here are some key characteristics and uses of Flash SMS

Visibility

Flash SMS messages are highly visible as they appear on the recipient’s screen instantly and prominently, usually on top of any other content. They are difficult to ignore as they demand immediate attention.

Non-stored

Flash SMS messages are not stored in the recipient’s inbox or message log by default. Once the message is dismissed or the screen is closed, the Flash SMS is usually not accessible again.

Limited Length

Flash SMS messages are typically limited to a shorter character limit compared to regular SMS messages. This restriction ensures that the message content fits within the limited screen space available.

Emergency Alerts

Flash SMS is often used for emergency alerts, critical notifications, or important announcements that require immediate attention. Examples include severe weather alerts, public safety announcements, or urgent system notifications.

Marketing and Promotions

Some businesses and organizations may utilize Flash SMS to deliver time-sensitive marketing messages, promotional offers, or exclusive deals. The immediate visibility of Flash SMS can increase the chances of the recipient noticing and acting upon the message.

User Interface (UI) Testing

Flash SMS can be employed during user interface testing or for diagnostic purposes. It allows developers or testers to display messages on mobile screens temporarily for debugging or verifying specific UI elements.

It’s important to note that the behavior and support for Flash SMS messages may vary across different mobile devices and operating systems. Some devices may allow the recipient to save or forward the Flash SMS, while others may automatically dismiss or delete the message after a certain period.

Flash SMS is a powerful tool for delivering urgent or attention-grabbing messages directly to the recipient’s screen, ensuring high visibility and immediate awareness of the message content.

Flash SMS

Can anyone send Flash SMS?

The ability to send Flash SMS messages depends on the capabilities and restrictions imposed by the mobile network operator (MNO) and the recipient’s mobile device. In general, not all devices and networks support Flash SMS, and the availability of this feature can vary.

Can anyone send Flash SMS?

it is recommended to consult the user manual or support documentation of the mobile device and messaging application being used to determine if Flash SMS functionality is supported. It’s also worth noting that even if the sender can send Flash SMS, the recipient’s device or network may not display them in the intended manner or support them at all.

Overall, the ability to send Flash SMS messages depends on a combination of factors, including the recipient’s device compatibility, network support, and sender’s device settings and capabilities.

Share this article

Meet our wholesale voice routing

Fulfill all your voice calling needs with our category leading wholesale A-Z Voice Termination.
Try IDT Express for a $25 Credit

Get $25 Free Trial Credit

You could be interested in

Learn

WSDL (Web Services Description Language)

WSDL (Web Services Description Language) is an XML-based language used to describe the functionalities, operations,...
Learn

Audio encoding

Audio encoding, also known as voice encoding or codec (compression/decompression), is the process of converting...
Learn

Average Hold Time

Average Hold Time, often abbreviated as AHT, is a key performance metric used in customer...