It's not the first time we've heard about Huawei working on a foldable smartphone and the first indicator came two months ago when company patented a device with flexible display. Now, a Korean news outlet claims that Huawei is working closely with Chinese display maker BOE to bring the first commercially available foldable handset in November.
The device is said to feature an 8-inch flexible display and rival the Galaxy Note 9 later this year. BOE is reportedly working on four different smartphone designs with two companies. Samsung could be one of those clients, but since the Korean company would probably do its own flexible panels, it's more likely that either Xiaomi or Oppo is the other. The latter has already filed a patent for its own version of a flexible handset.
I had a razr when it was popular and don't fancy flip phones but if this foldable phone looks good I'll consider it because it has to appeal & that's the most important thing. If it looks good I can bet you'll change your mind lol.
There is no need for physical connectors when folded. One can assume they will use the technology like smart magnetic connectors, i.e. how iPad /Surface connects to keyboard. So the PCB / battery is housed only in one side, the other side ...