ios手机号正则表达式

//检查是否为手机号的方法
-(BOOL)checkPhoneNumInput:(NSString *)phoneStr
{
NSString *photoRange = @"^1(3[0-9]|4[0-9]|5[0-9]|7[0-9]|8[0-9])\\d{8}$";//正则表达式
NSPredicate *regexMobile = [NSPredicate predicateWithFormat:@"SELF MATCHES %@",photoRange];
BOOL result = [regexMobile evaluateWithObject:phoneStr];
if (result)
{
return YES;
} else
{
return NO;
}

}