Yes, headphones, USB cable and power supply unit are always included in the standard scope of delivery.

The memory varies depending on the use. For example, if he only listens to music and watches short videos, 32GB is usually enough. As soon as several entire films are loaded, it would be better to go for 128GB. You should be able to download iMessage normally, but WhatsApp doesn't really work because the device doesn't have a phone number. But there is a trick to get WhatsApp to work anyway. There are various instructions on the net (e.g. search for "whatsapp auf iPod Touch").

An adapter is not supplied. If your stereo system has the old 30-pin plug, you can order this adapter 353949

My daughter has installed the current operating system.....

Hello Helzanova, The device can be connected via WLAN, so you can access any Internet radio (e.g. https://www.srf.ch/radio-srf-3/player / Spotify / Google Music). I can't tell you anything about iTunes, as I don't work with it, but there should be some radio stations available there too. Greets

This is the 6th generation.

Yes it's the new iPod Touch 6th Gen with the A8 Chip. :)

In fact, the system takes a share that is normal

I stream music and photos from iPod touch via apple airport express and apple tv. I also have a Samsung DVD and a Samsung notebook. My experience is that Apple and Samsung products don't get along very well, there are probably solutions, but they are complicated.

I didn't buy the product myself, but that's how it was with my iPhone. It came with iOS 8, but of course you can go to Software Update in Settings and download the latest iOS version immediately.

The 128GB version is exclusive to Apple and unfortunately we are unable to source it.

Yes, the charging cable and the USB plug are included. Everything is in the specifications: (Scope of delivery - Apple Lightning cable, Apple Earpods).

yes, you can

Probably only possible if purchased via Apple: http://www.apple.com/ch-de/shop/engraving-and-gift-wrap Or otherwise subsequently at another service provider such as a goldsmith, watchmaker, etc.

Why would it need a subscription? It only has WiFi and Bluetooth and no SIM adapter.