[ymolodtsov]

They stopped updating 5S because it only has 1Gb of RAM. They only do it when the device really falls short of technical requirements.

[la_barba]

If that is indeed the real reason, its unfortunate that they cannot get an OS to run acceptably in 1GB of RAM. Especially when they have such a tiny amount of hardware variations to support.

[TomMarius]

I thought it's more about the apps.