Question

It really depends what you want. Personally I would go for the N70 because I prefer the size and the formfactor. Changing from the N90 would mean losing the high resolution screen and the Zeiss Optics (although the N70 is still very capable in the Imaging department).

What do you consider a disadvantage?

In any case, a couple of things how a N70 is different from a N90:
- N70 form-factor
- N70 has FM radio
- N70 has lower-resolution display
- N70 doesn't have as good camera optics

Wirelessly posted (NokiaN90-1/3.0535.4.3 Series60/2.8 Profile/MIDP-2.0 Configuration/CLDC-1.1)

N90 disadwantages: 1.Short battery life 2.Its huge and heawy device.3.N90 cover is unreliable4.Pop-port is damaged 5.When i install sis apps and run it phone restarts.Many of them dont work.6.Sometimes there is lack of ram even then i close all apps.When i cant play wideo files or zoom image. In my opinion 220mhz is not enough for such high resolution screen. I think n90 has too much problems,so i want to know if n70 has the same problems?I would be wery glad if anyone can tell me

To me (based on your 3, 4, 5 and 6) it also sounds like your N90 needs at least a firmware update, or is outright faulty (broken).

I haven't seen such behaviour on my N90 or N70.