Updates to new versions of the operating system do not reach many smartphones. Only some mobiles, the highest-end, will have an update to Android 8.0 Oreo, as well as those that have been presented very recently. The other mobiles will be left with Android 7.0 Nougat. Manufacturers no longer consider it essential to update mobile phones to new versions, and the truth is that it is not so relevant.
Less and less mobiles update to new versions
The only manufacturers that do present updates for almost all their phones are those that have few smartphones on the market, and who want to compete with their rivals. They claim that their smartphones will have updates for pure marketing. It can be useful, especially in the case of entry-level mobiles. With mobiles like Moto E4 that will not update to Android 8.0 Oreo, There are not many entry-level smartphones that will have an update to Android 8.0 Oreo. However, it is nothing more than a resource for those manufacturers that need to compete with others to sell mobile phones.
Many other manufacturers no longer even dedicate a great effort to updates to new versions of the operating system, which come with new features that make it complex to adapt a new version to the software that their smartphones have. And also, in general, it always ends in a worse performance, which in turn leads to the initial question: was it necessary to update the mobile?
Updates are not relevant
En iOS an update to a new version is relevant, on Android not. That is, the updates are relevant, but not to the new versions of the operating system. It is nothing relevant that the Samsung Galaxy S8 is going to update to Android 8.0 Oreo if the new version is going to be almost the same as the previous one.. Actually, it would be better if Samsung introduced an update for the smartphone, even if it was not based on Android 8.0 Oreo. And like the Samsung Galaxy S8, the same is true for everyone else. Manufacturers have the ability to modify the software of smartphones, and do not depend on Google to do so. Many manufacturers already customize their user interfaces. And instead of updating to new versions of Android, they should update to new versions of their interface.
In reality, updates to new versions of Android are not that relevant.
Tell Alcatel that you never upgraded your Idol 4 (last year's terminal) to nougat.