Finally, enough people have woken up to what myself and many others have being doing for years - buy your own phone and keep it a few or even many years, or hand it down to the kids or else sell it on Ebay if you've got bored with it sooner.
On top of that, the market has matured massively and can't support rip-off merchants with 40% profit margins like Apple and wannabee rip-off merchants like Samsung with their S* series any longer.
Warren Buffet is not very smart IMHO investing even more of Berkshire's dosh into Apple. It's share price is going to nose-dive over the next few years, unless they spend their massive savings in buying their own shares back to artificially prop up the share price to keep Warren happy....then suddenly one day they'll run out money and crash and burn. Yes, it can really happen Mr / Ms / 'It' Millenial: been there, seen it, done it, etc...
In Apple's and Samsung's place the Chinese £100 phones such as the adequate Moto E4 and their Nokia and other equivalents built in China shall inherit the Earth on their 5% or lower profit margins.
Having a civilisation at least 5000 years old does have certain insights and other competitive advantages, I for one welcome our new Chinese overlords!