Sony Ericsson Customer Care Center 對 k750i 的新 firmware 降低相片質素的回應

firmware upgrade just enhance the stability of the phone , it will not add more features or reduce the function/quality of the phone . In this case , if your mobile phone was bought from our authorized dealer, there will have 12 months warranty automatically from the day of purchase.We would like to suggest you to check it at our Customer Service Centre and bring along with your original sales invoice for warranty.