A start-up called Energous has announced a collaboration with Vivo. This move could bring Energous' over-the-air charging technology, WattUp 2.0, to the the smartphone OEM's devices. Vivo has said that this move could alleviate "battery anxiety" for its customers.
https://www.notebookcheck.net/Vivo-has-set-up-a-collaboration-to-test-out-truly-wireless-charging-tech-for-its-phones.412109.0.html