IMO FE line shouldn't exist at all.
What Samsung should do is sell the last year's base S model for the FE price point.
Example for 2024:
S24: $800
S23: $650
A55: $500
A5x is one of Samsung's best selling phones
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Hence, Samsung should ensure their customers get a good experience, by putting X core in the SoC.
It is necessary, because as I explained, Samsung's OneUI skin is quite heavy. Hence, strong ST performance is essential for smooth and snappy performance.
Take the Pixel 7A for comparison. It can be found in the same price range as A54. But it is much smoother and snappier than A54 thanks to the Cortex X core (and the lighter Pixel skin on top).
The A5x line has always shipped with underpowered SoCs.
A51: Exynos 9611
A52: Snapdragon 750G
A53: Exynos 1280
A54: Exynos 1380
All these SoCs were weak for their time and price point. The only outlier is the A52
s 5G, which shipped with the 778G.
This has become problematic over time, as the A5x line has risen in price, and especially as last year, Samsung discontinued the A7x line. Which means, the A5x is now the premier of the A series.