Pada Wed, 18 Jul 2007 08:13:18 +0800
si Wong Jeat Shyan <jswong@talariax.com> bilang:
> Hi! This is somehow related to the roaming thread:
>
> - Does japanese operator use SIM for the subscription now? If yes,
> which operator?
DoCoMo, Softbank and au yes, but older phones are still SIM-less.
> - Does japan has GSM or UMTS 2100? My understanding is they use a
> different CDMA band. Which operator offer GSM/UMTS 2100?
W-CDMA networks are completely compatible (though some older FOMA base
stations may not work with non-Motorola phones). cdma2000 networks use
different frequency, so they are not compatible with foreign handsets.
> - Can the UMTS2100 send/receive SMS across operators in Japan?
I guess yes, never tried though. It can send/receive to operators abroad,
but not very reliable (sometimes SMS do not arrive).
Arnold P. Siboro (asiboro@maltech.jp)
"I think there is a world market for maybe five computers."
- Thomas Watson, chairman of IBM, 1943
Received on Thu Jul 19 04:05:17 2007