Samsung recently announced its second-generation Galaxy Z Fold 2 5G and Microsoft announced its Surface Duo foldable devices. Others have tried foldables in the past with limited success (LG, Huawei, Motorola), so why push these out these now?
The market for smartphones has gone tepid, with overall sales falling (and not just because of COVID-19). With little incentive to upgrade due to a lack of major compelling new features, couple with increasing prices on premium smartphones, people are keeping their devices longer. (This is true for both Android and iOS phones.)