[jisto1215]

Want to buy one of these phone. Looked for reviews and comparision. They didn't helped much. I want some opinions . Know both phones have same processor .Which one have better camera? Is OLED on lumia 730 is better than 640's LCD(not considering perfect black of led screen). Did lumia 730 have Rich Capture ?

[Chintan Gohel]

I suggest you get the 640 because it's cheaper and handles windows 10 better

[ven07]

The lumia 730 has basic HDR.. the difference being that you wouldn't be able to open the picture you took and manually set the brightness afterwards. With the 640 you do have that option..

In daylight, with a bit of work, you can get quite decent pictures with the 640 and stock windows camera. Haven't owned a 730 so can't comment, but I think the carl zeis optics always make a difference. Unless you're really into pictures, you probably wouldn't notice.

If you're a big selfie person or at least use the front cam, it's best to go with the 730 over the 640.. The specs in this case aren't wrong lol

[xandros9]

I think checking out Photo comparisons on reviews is best.

I believe the 730 takes smaller photos, but is better in low light.

OLED vs. LCD is fairly subjective. I prefer LCD's because lifespan, others like OLED because vibrancy, but it may or may not matter to you depending.

The 730 is smaller and the 640 has better battery life and may be cheaper.