Ipod nano 4th gen 4gb shake and setting maximum volume limit not wroking

Are you sure you have a 4th generation Nano?

A 4th generation Nano has a screen that is taller than it is wide in its normal orientation. It looks like this:



A 3rd generation Nano is fatter. Its screen is wider than it is tall. It looks like this:


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The 4th generation models were offered starting about September of 2008 & come with either 8 or 16 GB of memory.

Then it cannot be a 4 GB model.

As best as I can tell, there is no 4th generation iPod Nano for sale anywhere in the world with a 4 GB capacity -- if it is a 4th generation model, it should have either 8 or 16 GB capacity, no matter where it was bought. I have seen a review from an Asian publication translated into English in which the model was referred to as the "4G Nano," but in it the "G" refers to the generation, not the capacity in gigabytes.

Based on that, I would at least question the seller about what the "4gb" identifier means since to my knowledge a 4 GB model must be an earlier one, such as the 3rd generation model pictured in my first post, & could not have the "shake" function since it has no sensor for that.