The line graph compares four different features (domo, sim tx, lex and alpha) in terms of their average cost of mobile phones.Units are measured in euros.
Overall, Alpha had the highest average prices, while Sim TX had the lowest at the end of the period.
In january, Demo become the first price was about at 15€, and this amount increasingly increased to approximately 23€ in july. The next highest trent was a Alpha, it started about at 5€ and this amount continued from january to june; and the next months it dramatically rose exactly to 25€ in september.
The next lowest figures, Sim tx started about 10€ in january, and it dramatically upwarded at around 15€ in june and it increasingly declined to approximately 8€ prices in september. Lex become at about 14€ cost in january, but the next month it declined to 10€. And the next 5 months, it steadily continued at 12.5€, however, it dramatically reached to 19€.