Regulatory documents released by China's Ministry of Industry and Information Technology (MIIT) show that the iPhone 12 Pro and iPhone 12 Pro Max both come with 6GB of RAM, while the less expensive iPhone 12 and iPhone 12 mini both come with 4GB of RAM.
These documents also show that the iPhone 12 Pro Max comes with a 3,687 mAh battery, which is about 7 percent less than the 3,969 mAh battery found in the iPhone 11 Pro Max.
Despite the smaller battery capacity, Apple's specifications indicate that the iPhone 12 Pro Max has the same battery life as the iPhone 11 Pro Max, with both devices offering up to 20 hours of video playback and up to 80 hours of audio playback.
Apple never reveals the battery capacity or RAM of the iPhone, but future teardowns of the new device will confirm those details.
Here's the battery capacity and RAM information for the full iPhone 12 lineup:
iPhone 12 mini (A2400) 2227mAh / 4GB RAM
iPhone 12 (A2404) 2851 mAh / 4GB RAM
iPhone 12 Pro (A2408) 2815mAh / 6GB RAM
iPhone 12 Pro Max (A2412) 3687mAh / 6GB RAM
iPhone 12 mini
iPhone 12
iPhone 12 Pro
iPhone 12 Pro Max