I doubt that they will wait. It's just good business sense to prioritize.... densely populated cities and areas first and fan out to remote and rural areas. As a result, as of late 2018, Globe claims that nearly 95% of their cell sites nationwide are 4G/LTE.
For the most part, the delays may also be due to permits being stonewalled or falling into the cracks of bureaucracy and red tape. Not the least reason of which are the NPA or some other factions still demanding revolutionary tax for businesses (or cell towers) if it's within the territories they have control over.
Voting for the Samsung...
Zenfone Max Plus (M1) was released in 2017!
18 months lang guaranteed security updates ng Android so the newer the better...