I moved from Samsung to Nokia thinking it has better quality and service but now I completely regret doing so! I purchased Nokia Lumia 720 from flipkart 4-5 months back. Within two months of purchasing the phone, I started facing many problems. Here are some of the issues: 1) When I switch the phone off, it automatically starts on its own! 2) While using the phone, it restarts on its own several times. No prompt is seen before this happens, and it has happened at random times. 3) Network fluctuation. The same SIM card worked fine with my earlier phone, so I am sure my SIM card is fine. 4) Bing won't automatically change the wall paper. I have to go to settings again and again to do so! 5) While surfing or playing games, phone will automatically go to the home page! 6) Internet doesn't work properly with data connection. Again, I have tried the same SIM card with a different phone, and the problems vanish. 7) Sometimes it won't detect the memory card. 8) Silence ringer is also not functioning. I have already submitted my phone thrice at the care centre! Every time I submit my phone they format it and give it back saying no fault found! The third and most recent time on 21st Nov 2013 I submitted the phone, I requested them not to format the phone but keep it under observation as is. However, they went ahead and formatted my phone and expect me to believe that there is no fault found! The details of this care center are: Harmony AudioCare Center, Recycling pointAddress: Anjali Bldg, Ground Floor, French Bridge, Opera House Junctions 400007, Mumbai, Maharashtra, IndiaPhone: +[protected] Job Sheet no.- [protected]/ 131121/ 53 First of all, after me specifically requesting that my phone not be formatted, why was that the only solution found? Secondly, is formatting the only option? Does this mean that I need to format my phone every now and then for it to function properly? I have refused to collect the phone and have asked for replacement, since I refuse to format all my data every every now and then. It has been 20 days now that the phone is still lying with you'll and I have received absolutely no response regarding the same! Every time I try and talk to the contact centre, I get a reply saying someone will contact you at the earliest! May I know what is "Earliest" as per you'll?? 2 days, weeks, months or years?! Service Request No. is 1-[protected] If there was no defect in the phone why would one need to keep visiting the care centre? I have been to the center 3 times, with no luck. My phone is only 5 months old and still under warranty for the next 7 months. Please let me know how much longer I have to wait for a response. I need a replacement phone, and if that is not possible, I would like to return the phone and get my money back.