How Can I Send 140 Byte In One Sms By Senddatamessage()

I have read on different forums that we can send 160 (7 bit) characters and 140 (8 bit) bytes in one SMS message. I want to send 140 bytes of data in one SMS. I am can successful

Solution 1:

Part of the 140 bytes is reserved for the User Data Header (UDH) which is usually 7 bytes in size. More info can be found here.