(Telecompaper) The costs of a mobile SIM-only plan have generally come down in most countries in Western Europe in the past year, according to the latest research by Telecompaper. The annual comparison of mobile prices across 16 countries also shows that in most countries operators are including more and more data in postpaid plans, without a major increase in prices. In the survey of more than 1,400 plans available on the market, the Telecompaper Q1 2018 EU Benchmark report found that Denmark remains the cheapest place for a mobile plan in all comparisons, and Greece and Portugal the most expensive.