GALAXY TAB 16gb 3g+wifi swap for iphone 4 -

hi i have a samsung galaxy tab 3g+wifi 16gb+mini sd storage. open allnetworks .it is quicker than a ipad . has exellent battery life . can be used as a smart phone or pc .it has front and back cameras .it has screen protector . leather case . charger. box. .. swap for iphone 4 as i lost mine and need a replacement message me thanks