Yesterday's mobile popularity is today's FTSE "sell"

As a result of negative reports about mobile operators, the FTSE 100 index is currently down 10.8 points or 0.2% to 4547.7 and the FTSE All-Share index is off 0.2% to 2262. Vodafone – the largest stock on the FTSE by volume - is 2.5p or 1.9% lower to 130.75p and MmO2 is down 1p or 1.1% to 93.5p after Citigroup analysts suggested firms were going to have to do more to retain customers, and were therefore likely to damage profitability. High street clothes chain Next is up 58p or 3.8% to £15.75 after announcing first-half net income of £112.5m. And GlaxoSmithKline shares are up 12p o...