I used to have this phone an year ago. Phone has 2gb ram but still it used to lag. 16gb of internal was good. 5.5 inch display.
Charging jack becomes loose as time passes. Multi tasking is not good as per the standards of snapdragon processor. Phone also heats because of octa core. Yu promised for regular updates but one needs to wait for a long time for the updates. I personally experienced it. Camera is good but flash is a bit bluish. If you can compromise you can buy it.