Chinese phone manufacturer Realme has revealed a new phone that blows away the competition with a massive 15,000mAh battery. The company estimates that the phone’s battery can last up to five days on a single charge and three months of standby in airplane mode, making it one of the most exciting upgrades we’ve seen on a smartphone in years. But there’s one very important caveat: You can’t buy the phone. The main reason that you can’t pick up a Realme 15000mAh is bec...