This may be a reference to the fact that on upgrade, people dont tend to get as good a deal on the handset as they would if they were a new customer. In fact, unless you are on a higher tariff, or are particularly good at dealing with the network and haggling, then you may find that the only handsets free on an upgrade are those that are either lower in spec or older than the phone you have currently! Could be considered a downgrade I would say! The latest and most highly specced phones are rarely free on upgrade unless you spend a lot of money with the network.
Current: iPhone 4
Past: iPhone 3G, iPhone, HTC TyTn II, HTC Touch, Nokia N95, Motorola Z8, Qtek 8500, T-Mobile MDA Vario, SonyEricsson W900i, SPV C550, SonyEricsson K750i, Nokia 9300, I-Mate Jam, C500, Moto V600, SonyEricsson P900, P800, Treo 600, SPV e200, Nokia 1100, Nokia 6230, SonyEricsson K700i, T610, Nokia 7650, SonyEricsson T68, T29, Moto T250, Nokia 8310, Samsung A100, SPV Classic, Moto V50, Nokia 7110, Vodafone EuroTel
Stress is when you wake up screaming and then realise you havent fallen asleep yet!