The term"gimmick" is often used in a wide variety of contexts. In the realm of smartphones, a gimmick typically refers to features that are relevant only in very specific scenarios, cater to a narrow group of users, or fail to provide genuine value—sometimes a combination of these aspects.
What makes it even worse is that it is not FDA-approved, so it cannot be used reliably to take your own temperature. Another inconvenience is that you have to get really close to an object for a proper reading.. This one was useful for some people, especially when smartwatches were still not that popular, but even then the situations when such a feature would come in handy were pretty slim.
The worst downside to curved displays, however, is that they are much easier to damage. Even with a screen protector installed, there is a much higher risk of breaking your display as it is simply more exposed to hits. Not to mention that screen protectors for curved displays are typically more expensive and difficult to put on.Some gimmicky phone features have the potential to become truly useful, but the technology is obviously not there yet.