MIDP/CLDC Device Compatibility...

Hello everyone,
I am performing some research on the compatibility of MIDP/CLDC and current devices. It is a well known fact that some applications (MIDlets) will operate fine on some devices, while other devices require 'tweaking'.
Mikko Konito (writting for IBM) says "manufacturers often deviate from the [MIDP] profile" (link: http://www.ibm.com/developerworks/wireless/library/wi-design.html) which explains why these tweaks are necessary.
I would like to hear your views on what else could cause such "incopatibilities" with mobile devices and MIDP.
Many thanks,
P.M

Hi,
I worked about 5 years in J2ME development and porting. From the beginning of J2ME (MIDP-1.0 and beginning of MIDP-2.0) porting was a great business - every manufacturer and almost every handset type was different in many aspects.
Now the situation is a little bit better and also handset manufacturers are more responsible for their work.
But still - you must care:
- different display sizes
- different media capability (sound formats)
- diferent sets of API implementations
- ...and different BUGS in the MIDP implementation!
While the basic MIDP was implemented poorly at the beginning, now it seems that the MIDP itslef is implemented well on most of the new handsets, however the situation repeats with various new and non standard APIs (PIM, M3G...).
Simply - it's always good to test particular application on particular handset to be sure...
Rada

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