How to replace iPhone battery? It's no secret that the iPhone's battery is bad, so it's no wonder that rumors are swirling that the iPhone 7 will come with a bigger battery. Let's face it, batteries are the Achilles heel of many smartphones. But unlike the competition, iPhone batteries cannot be changed without an authorized specialist. At least that's how we've been taught, and last but not least, we're forced to do so by the warranty, which becomes void if we tinker with the iPhone ourselves. If you are wondering about this fact or if your warranty has already expired and you want to remove the iPhone battery yourself, you have come to the right address!