After 2 years of experience with the FRITZ! Fon M2 I had promised something more from the new C4, the new color screen is great, the processing impeccable, the menu well, ringtones, unfortunately, still modest, refer to the previous reviews, I have an extra top I paid the buy 612014002 version (with their local dealer there was this now in the blockbuster offer for 54), but the phone is still a slight noise present. Even the sound, especially in speakerphone mode, still seems somewhat dull and does not come ran to my old Telekom Sinus 500. For listening to music on the Internet one must already belong to the hard-boiled, the sound of the speaker is still as bad as the M2, can any modern mobile phone better.
My conclusion: The C4 is an M2 with nice color display, technically it was but little improvement that is 10 more but value.
