2G Bands GSM 850 / 900 / 1800 / 1900 – SIM 1 & SIM 2
3G Bands HSDPA 850 / 900 / 2100
4G Bands 1, 3, 5, 8, 38, 40, 41
Oppo A53 is has enough RAM for multi tasking and the chipset is good enough for games. You will have an option to buy a 6 GB variant of the phone so go for that if you use heavy apps.
There is a 5000 mAh battery in the phone which will be enough to last you more than a day.
The cameras here are good for basic photography but you should not expect amazing portraits from this. It will do the job, but not too well.