Apple ipod

How many songs a 4GB iPhone has to have?

I have an iPod Nano 4GB and so far I have about 631 songs.

I that until 1000, but it could be different because in reality the 4GB can store as perhaps SGB 3.7 instead of 4. that depends on the length of their songs and not be able to adding the 700 or 800. It's the same with two actually have 1.78 GB GBS.

Apple 4gb iPhone