Advantage of Symbian OS device over j2me and Brew OS 
devices is H/W access. Symbain OS has best Hardware access 
to the phone rather than j2me and Brew OS.

Advantage of Symbian OS device over j2me and Brew OS 
devices is H/W access. Symbain OS has best Hardware access 
to the phone rather than j2me and Brew OS.

symbian os is the latest os,the old ones are this j2me 
which have the files format of JAR but in symbian os we 
have SIS format,that means this is a third party software-
anybody can develop softwares in this os.and we also have 
fast browsing and a fast operating system.there are many 
advantages now in symbian os as they also provide 
touchscreen phones such as UIQ phones.

3rd party applications are also available in j2me. Hardware
access is best in Linux OS. Possibly Symbian is most popular
because of money coming in for multiple companies using same
OS....and one more thing ...it offers rich UI..but not
better than linux..:)

applications developed for symbian os generally tend to be
more efficient and powerful i.e. provide more features,
whereas an application developed cannot be that efficient or
powerful since it runs on a java virtual machine(jvm) and
it's featured are limited to the facilities provided by the
jvm. brew os need digital signatures for their applications
which is not needed for applications for symbian os.

Symbian OS is better than j2me bcz of h/w access.j2me can 
not go at very low level of any device its alwys take 
permission when we tey to access low level.but i don't 
think that symbian is better than brew bcz today senario in 
symbian it is necesary that we verify our application 
through digital signature. so it is similar with brew.Brew 
has also strong UI and h/w access capability. we can do all 
things in brew that we can do in symbian.so symbian is 
better than j2me but not better than brew.it is simmilar to 
brew bcz both are for different technology.symbian is for 
GSM handsets and BREW is for CDMA handsets.