If Piper Jaffray's annual survey of 4,500 teenagers in the US is anything to go by, Apple need not worry about the drop in iPod sales. Those parental wallets are now springing open to pick up iPhones.

The firm's numbers suggest that 80 percent of teenagers own an MP3 player (86 percent of those opting for iPod), down from 90 percent last autumn.

However, this fall in share is coupled with the fact that 53 percent of teens now use their mobile to listen to music.

Apple for all

In that market, iPhone's share of the pie is on the up and up. Piper Jaffray claims 17 percent of teens already own an iPhone, with 37 percent planning to buy one within the next six months.

Tablets are also gaining a foothold in the teen market.

22 percent claims to already have access to one, while a further 20 percent are looking to buy one before the end of the year.

Piper Jaffray doesn't ascertain just which brands of tablet are proving most popular, but with estimates suggesting iPad enjoys more than an 84 percent share of market, Apple's device is likely the dominant player.

[source: Business Insider]