Sales of the iPhone are faring poorly at third-party UK vendor Carphone Warehouse, writes The Telegraph. The official carrier for the UK, O2, recently enacted new discounts, in which an 8GB iPhone is free with a £35 monthly subscription, and a 16GB model is free with a £45-per-month plan. Either option also requires agreeing to a two-year contract, however, rather than a standard 18-month period