The line graph illustrates how the price of mobile phones changed from january to september.
Overall, although Domo was initially the most expensive type of phone, it was overtaken by Alpha by the end of the survey. In contrast, the figure for Sim TX fluctuated widely before returning to its initial level.
In January, the cost of Domo remained relatively stable (15 euros) during the first four months, followed by dramatic surge to reach 25 euros in july. However, during the last three months, it saw a slight dip to around 23 euros. Alpha, on the other hand, was the cheapest phone in January with 5 euros and fluctuated slightly to recover to its original amount in June, following which the trend overtook the cost of Domo to peak at 25 euros in the final month.
Furthermore, Sim TX saw less prounced changes with 10 euros in January and rose moderately to 15 euros in June, before rebounding to almost 10 euros in September. Lastly, the figure for Lex rose gradually to reach a little less than 20 euros at the end of the timeframe.
