How to send long SMS in Android?

Question

I'm using RSA Encryption with a key of 1024bit , the ciphered text's length will be more than 160 bytes , and on sending an SMS of more than 160bytes it gives exception and after using sendmultisms() and divide the message , at the receiver side gets unprintable characters and also I will have a problem of how to concatandenate the SMSs.

I am doing something similar HERE!!! http://stackoverflow.com/questions/14452808/sending-and-receiving-mms-in-android — Etienne Lawlor, Jan 22 '13 at 07:58

score 1 · Accepted Answer · answered Apr 12 '11 at 09:01

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You could use data-sms which supports true 8bit, whereass a normal sms only takes 7bit. This is why you get garbage on the other side without any further encoding efforts.

answered Apr 12 '11 at 09:01

theomega

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What should be the port number ? it throws an exception – andre_lamothe Apr 12 '11 at 10:35
Ask a new question about that and include the exception you got. – theomega Apr 12 '11 at 13:48

score 1 · Answer 2 · answered Apr 12 '11 at 09:35

1

You can also encode the ciphered text using Base64 encoding, break it up the into an ArrayList of Strings and use sendMultipartTextMessage. It then sends as many SMS as needed.

SmsManager sms = SmsManager.getDefault();
ArrayList<String> parts = sms.divideMessage(base64EncodedMessage);
sms.sendMultipartTextMessage(phoneNumber, null, parts, null, null);

answered Apr 12 '11 at 09:35

Corneliu

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I did that way but it at the receiver end it receives unprintable characters – andre_lamothe Apr 12 '11 at 10:34
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Did you realy use base64 as encoding? – theomega Apr 12 '11 at 13:46
just try it on device it's work fine. I also get this kind of junk character in emulator but on device work fine. – Girish Bhutiya Sep 14 '11 at 14:26

How to send long SMS in Android?

2 Answers2