Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Flippin Problems with this model phone

i850 2 wks after received--would power off everytime I closed it & also during calls. Sprint gave me HUGE hassel when trying to get it replaced. On phone with them 2:15 PM until 4:43 PM, went through LONG list of people who couldn't make a managerial decision and would transfer me to someone else or just keep me on hold extremely long time. One tried to sell me more expensive phone and telling me they DID NOT HAVE another i850 IN STOCK--I called back and another salesman said i850 was IN STOCK and did I want one. During final call I requested anyone in management and a lady finally took care of my call properly and 2-day expressed new phone, no charge.The aesthetic design and ease of use is lovely.The durability and value is LOUSY.I'll post again if replacement i850 is faulty as well.