There’s some good news for iPhone 6 plus users, According to an internal memo it sent out to Apple authorised service providers, where some older iPhone 6 Plus models can be bumped up to newer iPhone 6s Plus models.
Why is Apple being so generous, you may ask? Because they don’t sufficient stocks of iPhone 6 plus batteries.
Apple hasn’t specifically mentioned which iPhone 6 Plus models are eligible for the free iPhone 6s Plus upgrade, according to the internal memo procured by MacRumors. But it’s worth trying your luck anyway.