Apple has discontinued the iPhone 5S, with the result that consumers will no longer be able to buy it once networks' and retailers' current stockholdings run out.
The move comes after the Cupertino-based company announced the iPhone SE, its newest 4-inch phone and a direct replacement for 2013's iPhone 5S.
The 5SE looks almost identical to the iPhone 5S, apart from having the same colour scheme as the iPhone 6S.
But it's much more powerful. With the same camera, processor and RAM as the 6S, it's the most powerful 4-inch phone Apple has ever made.
Apple usually discontinues old handsets when it introduces new ones. The 5S was unveiled two-and-a-half years ago, which is an age in the mobile world.
According to Apple, the SE is twice as fast as the iPhone 5S. The only downside from looking at the specs is the screen – it stays with the same 1,136x640-pixel resolution, which is relatively low by today's standards.
The SE starts at £359, making it Apple's cheapest iPhone.
Apple's full iPhone line-up now stands as: iPhone SE, iPhone 6, iPhone 6 Plus, iPhone 6S and iPhone 6S Plus.
While Apple no longer sells the 5S, you can still pick one up from third-party retailers like Amazon, Carphone Warehouse, and of course eBay.
Pre-orders for the SE open tomorrow, so check back then for a comprehensive price guide.