How much do consumers really spend on their mobile services? According to a new study by Wireless Intelligence, individual consumer spending on mobile services is actually higher than reported ARPU figures, especially in the North American market. According to the research firm, users spread their mobile spending across multiple SIM cards and devices. The study measured the number of multiple connections per user to calculate "real" penetration and revenue per "real" user. According to Wireless Intelligence, ARPU in North America has supposedly been flat at around $51 since 2006, but using the new methodology, the study found that "real" average revenue per user has increased from $60 to $64 over the same period. Release