This is a tricky question.
I'm looking for some statistics indicating how many people changes the
default ring-tone when purchasing a cell phone (worldwide or on a
country level). As you know every cell phone is installed with a
default ring tone - you can change this manually - however many people
don't change this - but keep the cell phone manufacturers default
ring-tone.

Please note that I'm not looking for other cell phone related
statistics - so please do not send me other statistics unless they are
directly related to my "default" ring-tone request.

Good luck,

Martin

These statistics are related to your request, but they concern only
downloaded ringtones, not including non-default ringtones that are
resident on the phone:

"In Great Britain alone, 3.4 million cell phone users change their
ringtone on a monthly basis. That is 39 percent of mobile users in
Great Britain."

http://www.i4uuu.com/3w/english/ringtones.htm 

"Sales of ringtones and logos for mobile phones in Western Europe will
generate a revenue of E 225M in annual sales by 2003, according to a
new report by research company based Strategy Analytics. The study
reveals that that 24 percent of users in the region had already
downloaded either a ringtone or a logo for their mobile phone?s
screen. The report also shows that Sweden the Netherlands and Germany
have the highest penetration in this market, while France and Italy
are following."

http://www.iabuk.net/index.php?class=news&view=486

Hi pinkfreud-ga,
Thanks for your answer.
I knew it was a tough one ;-)
Unfortantly your data is not accurate enough as the 39 percent dosn't
indicate how many is tampering with their default ring-tone due to the
fact that most cell phones has up to 40 standard ring-tones to choose
between. So we can only assume that a substantial lower amount of
consumers (below 61 per cent) changes the default ring-tone ...
however we have no clue about how many as it in theory could be
everything from 1 to 61 per cent.

Sorry about this - but please do keep looking.

All the best from Martin