It's obviously never will can be, it's impossible to do. Until whenever Bitcoin is a currency that is clearly different from the offline currency of the characteristics and its natures, that is only in the internet world (must be online) must be connected with an internet connection. Anything done with bitcoin, never can't to do like as a offline currency that can be transacting without internet.
At present it's not possible to make an transaction with bitcoin same as that we do with the paper money even without any internet connectivity. Here nothing seems to be a complication, because now everywhere internet connectivity is found, which makes transaction with bitcoin same as paper money.
But we still have to consider that there are places that can't be reach by modernization especially remote areas. It makes it hard for them to connect to the world and adapt the modernization, what more to try to connect to the crypto world. Even if they know about bitcoin, earning it will be hard for them and it is possible for them to loss interest.