I am currently developing an application that pushes multimedia content to mobile phones: text file + jpeg image + amr sound file.
As MMSC i am using the one at NDH Finland. As a test mobile phone i am using a Jornada 928 with EzOS EzWAP MMS client. I am successfully able to receive notification sms and retreive the message.
But i am having problems displaying the mms. more specifically.
1) When i send a jpeg image alone it is correctly displayed (the same for amr sound file). But when I send a text file alone it is not displayed at all in my client. Should the text file be in an encoding other than ascii ?
2) Combining parts such as jpeg + amr causes one part to be displayed and not the other. Is this a problem of presentation file missing or the software acting as a client ?
3) this is a less crucial problem, but my jpegs are being resized. is it the NDH MMSC in Finalnd that is doing this ?
yes your mmsc converts the mms content of your message depending on the capability of the user agent (mobile phone). if your user agent accepts an image file with a less resolution the mmsc degrades the image so that it can be seen by your phone.