According to this report on Reuters, DoCoMo has said that as many as 240,000 users may not be able to use their phones overseas because of a software glitch. Faulty SIM cards on certain models are apparently preventing connections for messages and voice calls on networks outside Japan. DoCoMo said the glitch and it will replace faulty SIM cards for free.
The malfunction is at least the third reported by DoCoMo in as many months. The affected handsets are the BlackBerry 8707h, hTc Z made by Taiwan’s High Tech Computer Corp., NEC Corp.’s SIMPURE N and LG Electronics Inc.’s SIMPURE L, DoCoMo said.