TRAI's New SMS Suffix System Explained (2025 Update) — What P, S, T, G Mean in Your Mobile Messages!


Have you recently received text messages ending with -P, -S, -T, or -G? You’re not alone! Starting May 6, 2025, the Telecom Regulatory Authority of India (TRAI) has rolled out a new SMS classification system to help consumers identify the type and purpose of messages more easily.

This smart move helps millions of mobile users like you and me understand the true nature of incoming messages — and most importantly, protect ourselves from spam, scams, and fraud.

Let’s break down what it all means and how it impacts you.

🔍 What Is the TRAI SMS Suffix System?

TRAI has mandated that every business SMS now ends with a character suffix that categorizes the message. These suffixes will help users identify whether the SMS is promotional, transactional, service-related, or sent by the government.

🧾 Here's a breakdown of the new suffixes:

SuffixType of MessageDescription
-PPromotionalAdvertisements, marketing offers, product launches, sales pitches, etc.
-SServiceCustomer engagement, service updates, app notifications, non-promotional
-TTransactionalBank alerts, OTPs, account activity, ticket confirmations, etc.
-GGovernmentOfficial messages from government bodies (TRAI-exempted headers only)

📝 Example:
If you receive a message from a brand like ICICIBANK-T, it means it's a transactional SMS (like a banking OTP).

💡 Why Has TRAI Implemented This?

The main reasons behind this change:

  • ✅ Better Transparency: Know who’s messaging and why.

  • 🚫 Fight Against Spam: Instantly identify promotional or suspicious messages.

  • 🛡️ Enhanced User Protection: Stop falling for phishing and fraud.

  • 🔍 Government Regulation: Easier tracking of SMS campaigns and unauthorized senders.

This move comes as a response to rising concerns around spam, fraud, and scam SMS messages. With this new suffix-based system, TRAI is aiming to bring cleaner, safer, and more transparent communication to all users in India.

📱 Where Can You See These Suffixes?

Check the last 2–3 characters of your SMS sender ID. You’ll see something like:

  • VM-NICIN-G → Government Message

  • VK-HDFCBK-T → Transactional

  • AD-ZOMATO-P → Promotional

  • IM-RELIANCE-S → Service

These suffixes are visible in most smartphones by default and are part of TRAI’s DLT (Distributed Ledger Technology) compliance.

🧠 Tips to Stay Safe Using the Suffix System

  • ⚠️ Don’t trust -P messages asking for personal info.

  • 📲 Always double-check -T messages that look suspicious — especially with links.

  • 🛑 Block repeated -P senders if they are not relevant to you.

  • ✅ Trust -G only when they come from verified Government bodies.

📣 Follow for More Tech Tips and Updates!

If you found this article helpful, make sure to follow our official blog:
👉 narentrove.blogspot.com

We regularly post updates on:

  • 🔐 Cyber safety & mobile security

  • 📲 Tech tips and tricks

  • 🔔 Latest TRAI and telecom updates

  • 📉 Scam alerts and prevention

💬 Join the Conversation

Have you seen these suffixes in your SMS inbox?
Which one do you receive the most? 🤔
Let us know in the comments below!

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#TRAI #SMSUpdate #PromotionalSMS #TransactionalSMS #GovernmentSMS #IndiaTRAI #SpamProtection #MobileSafety #TRAI2025 #narentrove #TechBlogIndia #TelecomNews


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