Ancoay/Getty Images We may receive a commission on purchases made from links. Modern smartphones have greatly improved charging speeds, so that despite having bigger batteries than earlier models, they take less time to charge. This is because many major smartphone manufacturers have come up with their proprietary fast charging standards, such as SuperVOOC by OnePlus and FlashCharge by Vivo. Buying a phone that offers some of the fastest charging speeds means you can fully recharge the device...