Apple company has stopped the manufacturing of iphone4. I had this phone until it fell into water.it was a great phone, never hanged .the drawback was that apple had only made iphone 4 to be updated till ios 7 and today many apps demand minimum of ios 8.such apps include an important app youtube. now you can buy iphone 4 second hand for less than 3500 rupees and sell it for little above 2500.i regret a lot to have taken the phone lightly and carelessly throwing it in water because its quality of never hanging makes it stand out of other mobiles of same price. you can get the latest ios update for iphone 4s but not for iphone 4