In the very short term, maybe. But it's only cheaper for the very first phone. In a few years when the battery dies, the cost of the battery would be much lower

In the very short term, maybe. But it's only cheaper for the very first phone. In a few years when the battery dies, the cost of the battery would be much lower than the cost of a new phone, which the consumers are required to buy Same faulty logic for injket printers. They're extremely cheap so sure, you're "saving money" for a period, but the scales tip after one or two refill ink cartridges