ROM: 32/64GB, RAM: 3/4GB Discrete type DDR4(X)+eMMC5.1
Rear camera: 13MP AF+ 2M Marco + 2M depth sensing, Single LED Flash
Front camera: 5MP
Check out the disassembly video
The internal structure and components of the device are also good, although there are some hardware parts that scream affordable. The best example is the loudspeaker which is made as a large box in the Nokia G60 and most likely in Nokia X30, while the C31 has it much smaller and connected with two shabby-looking wires to the lower motherboard. Well, that is what the 200€ price difference looks like. Anyways, I do hope that Nokiamobile can improve this part in the future since it looks disappointing at least.
However, Nokia C31 also has an aluminium frame which will ensure that the device is structurally strong and durable. I like to see that the back cover is quite easy to take off although the battery is fixed by glue in the position.