>>39498197A new one. There seems to be a lot of 3d rendering and if how poorly optimised pokemon go is anything to go by, if you use anything older/slower than a flagship from 2016, even if it runs your battery life will be like, 1 hour.
I recommend waiting for it to come out and double checking every phone you're considering if it'll run because Also until we start seeing some info on device compatibility, no one can guarantee anything other than flagships from the last couple years will run.
The android ecosystem is a clusterfuck.
see:
"DeNA recommends a device with at least 2G of RAM, and Android OS 7.0. They do not guarantee functionality on all such devices, however. "