Quite good. I get around 9-10 hours on my jailbroken 6 Plus.

I think most AEON Stores (aka Jaya Jusco for oldies) will support Apple Pay. Because every major AEON store now promoting the new contactless VISA Wave system. If there's a NFC payment system, Apple Pay can make use of it.

The contactless payment system is just a card reader with NFC built-in. I bet you can use a US VISA card to pay via Apple Pay at AEON here now. Like in the US also, ANY card reader that supports NFC supports Apple Pay. It's only the bank that needs to implement support. The merchant don't need to do anything to support Apple Pay if they support NFC/contactless payments.

Apple Pay also don't need Bank Negara authorisation. This is because Apple Pay only replaces the physical card with the virtual one in your iPhone. To do that though, the banks need to upgrade their backend systems to support the tech that empowers Apple Pay like tokenisation.

it's because the asia iPhones have support for china mobile's special 3G & LTE networks. dubai/europe/us iPhones can do china mobile LTE but not 3G. however, all iPhones fully support china telecom and china unicom. this was when the iPhone first launched so the situation might be different now.