Traveling to Japan requires roaming service. What should I pay attention to?

When roaming in Japan, you should pay attention to:

1, CDMA mobile phone, can roam in Japan, just open the international roaming rights. Coverage basically covers most parts of Japan; You can make phone calls, answer phone calls and receive short messages; But I can't send short messages for the time being; You can't surf the internet. At present, the network coverage of CDMA in Japan is good, so it is recommended to use C network.

2. High-end customers with WCDMA mobile phones (Unicom 3G mobile phones) can better roam in Japan, need international roaming rights, and replace them with international cards with complete coverage; You can make phone calls, answer phone calls, send text messages and receive text messages.

3. When roaming in GSM network area, it is recommended to use ** 133 international callback service to make calls to Chinese mainland and enjoy ultra-low call charges.