The personal assistant Google Now which runs on Galaxy S4 is much better than Siri assistant, giving the user much more useful information such as its routine, work program of the week,or alternative routes in traffic to avoid traffic jams. Now Google can help you even to book tickets and see weather forecasts. Siri simply has been overtaken by Google now.
IPhone 5 barely has half the memory of Galaxy S4, because Iphone 5 has only 1 Gb of RAM.
Galaxy S4 has a removable battery, which means that when battery runs out, you dont need to connect the phone to a power source, Samsung has already sales extensive removable batteries.
Samsung Galaxy S4's buyers can extend the storage capacity with 16 GB, 32 GB or 64 GB.
Hourglass is already reversed, so my advice is already doing pre-contracts to local operators for this amazing smartphone which is Samsung Galaxy S4.