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It's official: Smartphones will need to have replaceable batteries by 2027
(www.androidauthority.com)
This is a most excellent place for technology news and articles.
Why not? Many companies already have US exclusive SKUs. Some companies like Samsung even have a history of shipping completely different SOCs.
A different chip is a different scenario. We're talking about how the entire design, case etc has to accommodate for a removable battery.
Different SOC means different motherboard, different antenna layout, different everything. It's no different from making battery removable.