Afaik all PDC-phones sold in the past years were already UMTS-compatible, so only subscribers with very old handsets were affected by the shutdown.
I can't find any more specific information on frequency usage other than PDC used the following three frequency ranges:
- 800 MHz band: 940–956 MHz uplink / 810–826 MHz downlink (130MHz duplex spacing)
- 1500 MHz band I: 1147–1489 MHz uplink / 1429–1441 MHz downlink (48MHz duplex spacing)
- 1500 MHz band II: 1501–1513 MHz uplink / 1452–1465 MHz downlink (48MHz duplex spacing)
All these frequency blocks seem to have been refarmed and assigned to four LTE operators back in 2009 (
Japanese gov't confirms frequency bands for LTE) allthough it seems like there hasn't been any LTE frequency band specified for the former PDC800-range (
http://niviuk.free.fr/lte_band.php).