tom.ina, you'll need to enter your DoCoMo username instead of phone number -- we send the reminders to username@docomo.ne.jp

Sorry if this was confusing -- we'll try to make this clearer. If you continue to experience problems, please let us know.

emily, thank you for your reply.

But it is not solved yet. I tried my username but didn't receive reminder - MYUSERNAME@docomo.ne.jp can receive email reminders.

By the way, I googled about SMS service and found some articles that says global SMS often doesn't work fine. It may not be RTM's problem but global SMS service's - I don't know what is the problem though.

tom.ina, we found a problem with our DoCoMo reminders -- we have now fixed this, so it should work now. Please let us know if you experience any further problems. Thanks for reporting this!

Now it is working!

Thank you for your support.

No problem :)