Korean LMS : similar to concatenated SMS?

What happens when I send a really long message through A2P line? Is it delivered in one piece to cell phone? Or is it cut into parts and delivered as multiple SMS? If so is the order correct?

Every company that needs to send long messages for whichever purpose faces these questions. And truth is – depending on a lot of factors the answer will be different.

Not all countries and networks support the so-called Concatenated SMS (C-SMS, Concats).

Concatenated SMS – a service, allowing delivery of SMS longer than the standard 160 GSM characters in one piece to the handset.

Number of SMS

GSM characters

Unicode characters

1 standard SMS

160

70

2 concatenated SMS

306

134

3 concatenated SMS

459

201

4 concatenated SMS

612

268

Basically, the process involves breaking the message first into multiple parts and then reattached together in the correct order into one message when delivered to the handset.

There is no fixed limit for concatenated SMS, depending on the device capacity it may vary. As for the destination and network – here’s the catch. CDMA networks do not support concatenation. So the messages will be delivered in parts to the handset, which is why for some countries SMS Hub providers always mention that they can not guarantee 100% delivery of the messages over 160 bytes (e.g. USA).

Another case where concatenation is not supported – South Korea. South Korea has a unique service called LMS (Long Message Service). Unlike other countries, for A2P providers Korean message length limit is different :

Message type

GSM characters

Unicode characters

1 standard SMS

90

45

1 standard LMS

91~2000

46~1000

From technical side, the process does not involve concatenation, the message is delivered in one whole piece from the Sender all the way to the handset.

The biggest difference and the benefit of LMS over C-SMS is it’s price. While A2P SMS providers charge the total price as SMS price x (Num. of parts in C-SMS ), Korean providers offer single pricing for LMS. It means, that no matter how long the message you sent is, 200 or 2000 bytes – you still pay the same price, while with C-SMS for really long promotional text you might have to pay 10 x SMS price.

 

Complete Guide to Korean promo / advertisement SMS

In this digital age, more and more people are concerned with the issues of cyber-security and protection of personal information. For companies in the IT-business, as well as any other enterprise, communicating with their customers using the modern technical tools and applications, this subject is extremely hot.

All the countries are introducing strict policies in terms of SPAM prevention to protect their citizens from constant disturbance by the unwanted flood of advertisement messages, and the corporations from highly expensive lawsuits.

South Korean laws (namely, Korean Telecommunications Policy on Spam Prevention, 2014) contain some general guidelines on sending promotional traffic to Korean mobile phone users. The main points to consider are (ref. to picture below) :

  1. Header (광고) – in Korean it means “ad, advertisement” and serves the purpose of notifying the handset users that the message they received is of promotional nature. Whether or not the message itself is written in English, Chinese or any other language – the Header has to be attached by the Sending company in Korean.
  2. Compulsory opt-out – at the bottom of the message, an opt-out option has to be added, so that any handset user could unsubscribe from getting any more promotional messages in the future.

Promo SMS copy

To ensure high delivery rate, the best option is to consult with the SMS provider before sending the traffic. You may contact our specialists to receive full consultation regarding sending promotional messages to South Korea ( and not only)

E-mail : sureminternational@gmail.com

 

MMS

Multimedia Messaging Service (MMS) – communication technology, allowing exchange of not only text information, but also multimedia attachments (video, audio, pictures) between mobile devices.

You may exchange MMS with your friends and family, sharing beautiful pictures of places you visit or new things your try, but form the point of view of corporate clients, the purpose of usage is slightly different.

At SureM we offer various solutions based on MMS technology, one of the most popular of them being the Map MMS.

Map MMS is a feature allowing you to send MMS with Map attachment to your customers / partners / co-workers to give them a better vision of the location you want them at :

  1. A place of event for customers (shopping mall, square, park..)
  2.  Place of meeting with a client (cafe, office..)
  3. Workshop location for your co-workers

For these, and many other cases SureM is offering its Map MMS service.

The message may contain up to 2000 bytes of text + image file attachment.

  1. General message view :

MMS_001

2. MMS image file attachment

MMS_002

For further inquiries, feel free to contact SureM at sureminternational@gmail.com

Sending SMS to Korea

There are three major Mobile Carriers in South Korea : Korea Telecom, SKT and LG U+. These days, following the progress in 4G/5G… development, more and more people rely on various messengers rather than SMS. That is for personal communication.

When it comes to corporate use, SMS is still a very important tool in reaching out to the customers, be it advertisement messages or registration codes for some app or service.

When sending SMS to South Korea, there are certain specifics you should be aware of :

  1.  When sending SMS from abroad, the message length is limited to 90 bytes.그림1
  2. Messages beyond 90 bytes will be delivered in one piece, but not as commonly known concatenated SMS (concat, C-SMS). In Korea, there is a term of LMS (Long Message Service) for messages of 91~2000 bytes.
  3. One of the special headers might be added :
  • [Web발신] (“Sent from Web”), indicating that the message was sent via A2P route.
  • [국외발신] (“Sent from abroad”), indicating that the route used does not belong to a local provider
  • (광고) (“Advertisement”), indicating that message contains promotional information.

IMPORTANT! The first 2 headers are automatically added by the Mobile Carriers and are not counted in the overall byte count. Thus, if you are charged by your provider for adding these extra bytes… Well, let’s say you have a good reason to find a new one!

E-mail : sureminternational@gmail.com

2-way SMS to South Korea

The term 2-way SMS basically means a solution offering both MT SMS and MO SMS in one combination.

2-way-sms

When it comes to receiving response from customers, conducting marketing survey, collecting votes and many other projects – 2-way SMS can we a powerful tool to build a connection with your target audience.

So what is the standard for MO numbers and 2-way SMS in South Korea?

There are 2 types of virtual numbers that can be assigned to the company for collecting MO SMS : Short Codes (SC) and Long Codes (LC). 

Long codes : 0133-xxx-xxxx (format)

Registration takes up to 3 business days and usage entails monthly fee and per MO SMS price.

Short Codes : contact sureminternational@gmail.com for details.

The ways to implement the code in your SMS are :

  1. Use it as Sender ID – in this case, people can simply reply to SMS they receive and you will be able to collect all the responses in your system.
  2. Insert it in the body of SMS – a preferred method if you want to use multiple MO numbers for your campaign or absolutely need to keep the Sender ID different.

 

 

Sending SMS to South Korea

  • Guarantee the highest success rate for the traffic sending to Korea
    • (1)We have accumulated full NPDB of three mobile operators for 17 years of experience
      • In Korea, there is Number Portability service provided by main three operators
      • E.g. 010-1234-5678 number, originally belonging to KT can switch to another operator (SKT or LGU+)
      • Fast transmission to the connected operator based on all NPDB information
        (NPDB : Number Portability data base)
    • (2)Supporting messages receipt without blocking from the SPAM policy
      • On 2014, Offered Guideline about transmission of advertising message
      • On 2015, the policy has been revised for filtering SPAM (Enforced on October 2015)
        • ·Policy enforcement to prohibit changing sender ID randomly
        • ·Service implementation to block sending message with stolen number
      • =>We provide a guideline to the customer to send a message which is fitted in the government policy
      • <In case of sending SMS with unavailable sender id or
        sender id which is not match to the numbering plan in Korea >[Failure of Detailed rules] [Proper examples]
    • (3)Possible to send to the minor operators
      • Transmission to the phones connected with KT Powertel , Ann Phone and Internet Phone
      • Numbering system according to the kind of service
        • ·SKT, KT, LGU+ : +82 – 10 – XXXX – YYYY
        • ·Internet phone : +82 – 70 – XXXX – YYYY
        • ·Seoul Landline/ Internet phone : +82 – 2 – XXXX – YYYY
        • ·Other destinations Landline / Internet phones : +82 – 31 – XXX – YYYY
          • ※Other destinations: Gyeonggi (31), Incheon (32), Gangwon (33) and Chungnam (41), Daejeon (42),
            Chungbuk (43), Sejong (44), Busan (51), Ulsan (52), Daegu (53), Gyeongbuk (54), Gyeongnam (55),
            Jeonnam (61), Gwangju (62), Jeonbuk (63) and Jeju (64)
        • ·KT Powertel : +82 – 13 – XXXX
    • (4)Tracing the reason of failed message and issuing weekly report for increasing success rate
      • Delivery rate improvement 70% -> 96%
        • ·The actual successful delivery rate is considered as 100%
          because the failed message of 4% is caused by the reasons below.
        • ·The reason of Failure : Invalid phone numbers or handset power off
      • Delivery rate improvement grounds (failure cause analysis and response)
        • ·Sender ID regulations compliance guide
        • ·Solution for Number Theft Protection Service
        • ·Error code status for non-existent numbers
        • ·Special solution for multilingual messages that are delivered incorrectly
  • Supporting to send messages in multi-language and higher quality service only in Korea
    • (1)All languages supported
      • You may send messages in English, Japanese, Chinese etc.
      • Full multilingual coverage (send messages in any language to any country of the world).
      • [Other company] [SureM]
      • [Other company] [SureM]
      • [Other company] [SureM]
    • (2)Unlike any other A2P providers, we can deliver 140 byte SMS to Korean handsets!
    • (3)Individual 1:1 Customer Management service (with designated Account Manager)
      • Your personal Account Manager is always ready to assist on any possible enquiries and provide the information on successfully transmitted, non-transmitted messages, delivery rate and total indicators in a report, based real-time monitoring system and provide consultations based on the data.
    • (4)Weekly reports
      • Transmission details, delivery rate information provided