Does the iPhone 5s support LTE Advanced?
No, the iPhone 5s cannot take advantage of LTE Advanced network speeds. Previous iPhone models, including the iPhone 5c also do not support the technology.
LTE Advanced cellular data networks are just coming online, with mobile device makers looking to incorporate compatible radios in the near future. In the meantime access is limited. Apple does not currently manufacture an LTE Advanced compatible iOS device.
LTE Advanced provides improved download speeds via carrier aggregation of multiple bands and other tweaks. Future iPhone owners can expect their devices to take advantage of the technology, resulting in optimal download speeds of 100 Mbps and up.