Under the EU’s Batteries Regulation, portable batteries in products sold in the EU must generally be removable and replaceable by consumers.
This requirement helps extend products’ lifetime by allowing battery replacements and supports recycling by making it easier to collect used batteries.
Mobile phones this is no exception, and all major brands, now switching back to removable battery concept.
https://environment.ec.europa.eu/news/commission-seeks-views-battery-removability-exemptions-2026-04-28_enTags: Smartphones must have user-replaceable batteries by 2027 .... The legislation comes into effect in February, 2027