I purchased a samsung mobile last year. the look was very good and when I started using it. it worked well but after few days as I installed some applications it went down as slow and dull.major problem in samsung mobile is hanging problem. you never know when it will go to hanging position and you will be unable to open any application and closing any application and the other majot problem is dialing the numbers. suppose you dial a number and select the sim but dialing is not started and you are to dial agian and click ok and select the sim. now what will happen there will be two calls from your n umber to the same number and from second call you will be listen busy tone or call waiting tone.this is very bad experience