LONDON (Reuters) - Mobile operator Vodafone said it was on track to meet its full-year forecasts on Tuesday despite losing customers in Germany, its biggest market.

The British group reported first-half service revenue of 15.1 billion euros ($16.06 billion), a 4.8% increase on an organic basis and slightly ahead of expectations, and a 3.8% rise in adjusted core earnings to 5.4 billion euros, in line with market consensus.

($1 = 0.9403 euros)

(Reporting by Paul Sandle; editing by Sarah Young)