I don't have one myself (my daughter has an A50 and I've got an
S55).  These are great phones.

An interesting thing about the A55 is that it can be upgraded to
a C55 using a Siemens data cable and software available on the
'net.  This topic comes up from time to time on the
uk.telecom.mobile newsgroup.

John

Long delay to be able to make a call or send an SMS after you turn the
phone on. That would be the biggest gripe I've got with it.

Oh, and the alarm requires you to mark which days of the week you want
it to work (as opposed to my old Nokia where I just set the time and
enabled it every night). I suppose this is good for some, but I always
forget about it on weekends and sleep in.