The Honor 9N packs a decent 3000mAh Li-Po battery which can power this device pretty long. It is a 4G VoLTE supported device so all networks will work. Other connectivity features are Wi-Fi, Bluetooth, GPS assisted location, FM radio support etc. On the port section, this phone has a standard micro USB and a 3.5 mm audio jack.
4k should be bare minimum now, smartphone makers are pushing megapixels and notches like a retard but they are compromising on one of the most important aspect of the phone - aka battery.
We need advancement in battery like Lithium ceramic or Graphene based.