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Sony erricsson K770i C903 phones 2010/8/24 20:29
I have Sony ericsson K770i and a C903 phone. .. will these two phone work in japan, if I am using my home country sim and using the roaming service ?
by ISh (guest)  

sony phones 2010/8/25 09:17
Yes, both phones operate on the 2100 MHz frequency so they should be able to internationally roam using your home country's sim assuming that your carrier has a roaming agreement with a Japanese carrier. Check your carrier's website for more information.
by yllwsmrf rate this post as useful

sonny ericsson C903 2010/9/2 10:09

Will unlocked 3 mobile UK sonny ericsson C903 phone work in japan ?
if I am using my home country sim and using the roaming service ?
by Ish (guest) rate this post as useful

see above 2010/9/2 10:28
Will unlocked 3 mobile UK sonny ericsson C903 phone work in japan ?

Yes, see above. If the phone is unlocked you can use a Japanese SIM, however unlocking is not required if you plan to roam on your 3 mobile plan.

if I am using my home country sim and using the roaming service ?

Yes, but you may have to call them before you leave to activate international roaming.

http://www.three.co.uk/Help_Support/International
by yllwsmrf rate this post as useful

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