The most popular apple smartphone 5S appeared in stores in the fall of 2013. Along with it, an update of old devices to the new 7 iOS became available. The new smartphone itself was already on it.
Interface iOS 7
A huge amount of time has passed since then, and the phone continues to receive system updates, going through all its versions. Despite the fact that the hardware of the device is already far from the top, all the functionality of the operating system is supported without problems. Even on the last 11 iOS there are no slowdowns, fast battery discharge and other unpleasant factors.
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Interface iOS 11
Thanks to the 64-bit processor, the 5S is likely to receive future system updates as well. Moreover, Apple decided to continue to focus on the stable operation of devices, and not on the introduction of new embellishments and features.
The nice thing is that there will be no more special slowdowns of old devices. This fact will allow the old 5S to serve many for more than one year.