Android Question limit of the length of the text in the SMS message

[Valeriy Lakhtin]

Hi frends! How to know the limit of the length of the text in the SMS message. What determines this setting: on your phone or mobile operator. I know that the use of a language other than the Latin alphabet increases by 2 times the volume of messages.

 

[DonManfred]

SMS are limited to 160 bytes each. If you are using a characterset other than Latin then each character needs two bytes. So the max chars using such characterset is around 80.

 

[Valeriy Lakhtin]

I thought so. But my SMS mixed Latin and Cyrillic. I have developed an algorithm counting limit. But on different smartphones exactly the same text is sent SMS sometimes and sometimes not?

 

[DonManfred]

Some providers limit the length to be less than 160 bytes. MAybe cause they add text to the SMS send... ("Send using xyz-Provider http://xyz.com")
Maybe this. Maybe it is your algorythm which does count wrong...

 

[Valeriy Lakhtin]

I live and work in Kazakhstan. The level of service of mobile operators low so that information can not learn. Maybe there is a way to control the actual SMS sent or not sent, because of great length. Can you give some advice

 

[DonManfred]

Sorry, i just tried to send a sms a few time to test. And only latin... I cant help, sorry.

 

[Valeriy Lakhtin]

I whant to registered the event - actually SMS sended or not. To send a SMS, I use the code

Dim SMSOK As PhoneSms
SMSOK.Send(strPhone, sms)

 

[Erel]

I don't know how you can find this limit however you can use this code to send large messages: https://www.b4x.com/android/forum/threads/max-length-of-sms-message.20006/#post-115689

 

[Valeriy Lakhtin]

In your link I read -
Since UDH is part of the payload, the number of available characters per segment is lower: 153 for 7-bit encoding, 134 for 8-bit encoding and 67 for 16-bit encoding.
All SMS is encoded in one way. Therefore, if you are using different languages, the limit does not depend on the proportions of the different languages and Latin. The combined SMS limit will be fixed 67 characters for 16-bit encoding. I right?

 

[Erel]

I right?

Yes.

 

[Valeriy Lakhtin]

Well everything I check you link. I am very glad! But I do not know how much will cost such long SMS to my application users.

 

[Tayfur]

hi check;

Your annswer in my sms links;
and you can look my lib.

'long sms PDU Bu linkler ile GELEN mesajların parçalarını kontrol edebilirsin.
'https://hiteshagja.wordpress.com/2010/04/04/send-long-sms/
'http://mobiletidings.com/2009/02/18/combining-sms-messages/

'http://smstools3.kekekasvi.com/topic.php?id=288

'Initializes the object. You can add parameters to this method if needed.
'http://www.urlsms.com/sms-calculator/
'http://spin.atomicobject.com/2011/04/20/concatenated-sms-messages-and-character-counts/
'http://messente.com/documentation/sms-length-calculator
'https://en.wikipedia.org/wiki/GSM_03.38

 

[Tayfur]

normalliy 7bit(GSM) encoding is 160char length
Unicode encoding is 70char length.

You change special char for reduce to long sms cost.

for example.
you must change like it.
"Ç" -->> "C"
"Ö"--->>"O"

after you must calculate sms length.
http://messente.com/documentation/sms-length-calculator