Vivo tipped to launch a huge foldable phone before the end of the year

Fans of foldable phones have plenty to look forward to over the coming months: the Samsung Galaxy Z Fold 3 and Samsung Galaxy Z Flip 3 are due to be launched in the next few weeks, we might well see a Google Pixel Fold in the near future, and now it looks as though a Vivo foldable will turn up later in the year too.