I'm developing a program related to SMS, there several
1. Is PDU Format the standard form for messaging (SMS)?
What about ringtone and picture/logo, are they using the PDU
2. How is a cellphone save the data (text, image and
ringtone) in memory (inbox, outbox and archieve using SIM Card
and Cellphone Memory)? Is it using PDU, hexadecimal binary or
maybe another method?
4. Are there any differents between SIM Card and cellphone
memory in saving method?
5. In program development, must we code 'the save method'
or just the phone do it?
Thanks for helping