iPhone Duo teardown reveals dual batteries and fragile inner display

A teardown of the iPhone Duo by Phone Repair Guru shows two batteries rated 2,962 mAh and 1,921 mAh, a modular charging port and a vapor chamber. The inner foldable display remains fragile and costly to repair, and Face ID is replaced by Touch ID in the power button.

• Dual batteries of 2,962 mAh and 1,921 mAh keep the phone partly working if one fails
• A20 Pro chip, 12 GB of RAM and a vapor chamber for cooling
• Outer screen: Ceramic Shield 2, 120 Hz and up to 3000 nits brightness
• 48 MP main and ultrawide cameras, plus a 4 MP under-display front camera