With reports indicating that a Samsung Galaxy S25 Slim may be released in the first half of the year and an iPhone 17 Air (which may launch as the iPhone 17 Slim or something else entirely) may be released in September along with the rest of the iPhone 17 series, it appears that both Apple and Samsung will be releasing slimmer smartphones next year. However, there are currently rumors that they may not live up to their names.

Both Samsung and Apple have failed in their attempts to employ new materials and processes to boost the density of the batteries they planned to put in these phones, according to @Jukanlosreve, who cited South Korean leaker yeux1122.

Although they supposedly failed, @Jukanlosreve claims they will instead make the phones thicker than originally planned so that they may still have a respectable battery life. If they had been successful, they would have been able to outfit these purported slimline phones with small yet high-capacity batteries.

Do these phones still serve any purpose?

This raises the issue of whether Apple and Samsung are still creating these phones at all, given that their main selling point is that they are reportedly considerably thinner than the other Samsung Galaxy S25 and iPhone 17 versions, even if in practice they might not be.

Although the precise thickness of either phone is unknown, the iPhone 16 is 7.8 mm thick, so if the iPhone 17 Air is thicker than 6 mm as is being speculated, it may not be appreciably thinner than other iPhone models.

Naturally, all of this is all speculation at this time; we have no concrete proof that these phones are actually being developed, much less that they will be thicker than anticipated. Take all of this with a grain of salt, but if you’re looking to purchase a slimline phone next year, this newest leak doesn’t seem encouraging.