What IsConcatenated SMS?

Concatenated SMS, also known as long SMS, is a type of message designed to send texts longer than the standard 160-character SMS limit.

It works by breaking up the text message into two or more “concatenated” SMS messages and “stitching” the messages back together on the receiving end. This extra length allows for more information to be passed through fewer SMS messages, saving mobile phone users time, money, and limited message storage.

Concatenated SMS is the ideal communication method for those occasions when you need to send longer messages than would fit in a single standard SMS, such as when sending a long SMS to a group of people.

What is the Character Limit for Concatenated Messages?

The SMS character limit for concatenated messages is reduced by 7 characters per text. Generally, each segment in a multipart message is limited to 153 characters, and messages that contain any Unicode character are limited to 67. The overall length of a concatenated message will be determined by the character limit of the receiving carrier.

The use of message concatenation allows developers to send larger texts with more ease. A single message is divided up into smaller, more manageable messages that contain no more than 153 characters each.

Types of Concat SMS Messages that Businesses Can Send

1. Appointment Reminders

Businesses can use concatenated SMS to send longer appointment reminders to customers with a wealth of information in one go. The text can include the appointment date and time, the address of the meeting, and a brief outline of the appointment agenda.

2. Priority Notices

Concatenated messaging is also useful to help customers stay up-to-date with anything new, such as a special sale, discount, or an upcoming event that customers should know about.

3. Automated Greeting Messages

With concatenated SMS messages, businesses can send customers automated “Happy Birthday” messages or other personalized greetings that could increase customer loyalty and engagement.

4. Coupons and Promotions

If 160 characters are not enough, businesses can use concatenated SMS to send customers unique coupon codes or promotions that can entice them to make a purchase.

5 Concatenated SMS Examples

Banks and Financial Services

State Holdings Bank has detected a suspicious transaction on your account. To protect your finances, we've blocked the transfer of $120. To restore access, please visit our website and answer security questions. Thank you for banking with us, Mary


Dear John, we are looking forward to seeing you on Friday, 07.06.23, at 3:00 pm. Make sure you arrive at least 15 minutes early so you have time to fill out the paperwork. If you need assistance getting here, please call our office for help. Don’t forget your insurance card. Best regards, Cordial Care.


Hi Sophie, Best Nest Hotel has recently introduced a special package: stay 1 night and get the 2nd night free! We offer a serene atmosphere with premium amenities and services. We have a wonderful outdoor pool and a beautiful beach area to explore. We hope to welcome you to our hotel soon! Find out more: bit.ly/p1we1


Dear Mr. Brown, thank you for entrusting Ross & Rogers with managing your legal affairs. We have made significant progress in your case and are confident that a satisfactory outcome is in sight. Our legal team is continuing to monitor the situation and will keep you updated on any further developments. Call +1-202-555-0157 for more information.


Hey Patricia! The Full Cart is excited to announce our new spring collection, available now! Treat yourself to something special, we have a wide selection of clothing, accessories, and gifts for everyone. Save 20% on your purchase when you use SPRING20 at checkout. Offer ends Sunday! Shop now and welcome the season of sunshine.