NSString *content=[[NSString alloc]
initWithFormat:
@"unique id: %@ \nlocalized model: %@ \nsystem version: %@ \nsystem name: %@ \nmodel: %@",
[[UIDevice currentDevice] uniqueIdentifier],
[[UIDevice currentDevice] localizedModel],
[[UIDevice currentDevice] systemVersion],
[[UIDevice currentDevice] systemName],
[[UIDevice currentDevice] model]];
NSLog(@"%@",content);