I bought this phone in last week of august and thought to be a very good buy.
However, in two months, i.e. October 20th, the volume control part (upping the volume) stopped working and it became difficult to converse as both the talking and hearing volumes became very low. I then went to the "Mobile
Shop" from where I bought it in bangalore, and they showed me the door of the service centre. Went to the service centre and they came back saying that this particular model, i.e. 3600 is have lots of complaints and worse, they are not able to service as the spare parts of this model is not coming from the company. So if I wanted it to be repaired, then I had to keep the phone with them for 3 to 4 days (and even then they are not sure) and if the company decides it needs to be replace, then it will take at least a month!!!
I came away without doing anything and exercising my vocal chords more now when I talk into my phone.