A 32 mb micro sd card of iphone 4 contains photographs of nearly 250. it depends on the size of photographs whether it is large or whether it is small. if one file contains nearly 50 kb then we can hv 2000 pics. if the size of one pic is 200 kb then we can hv nearly 500 pics. it varies from size to size.source: How many photo in iphone 4 32mb?