I started international roaming, why can't I call and send text messages to China?

If you have enabled the international roaming function, but you can't use it when roaming internationally, there may be the following reasons:

1. Some countries have different network standards and frequency bands, so it is necessary to replace appropriate mobile terminals to use the international roaming function;

2. The mobile phone is set to automatically select the network, and no operator can be found to cooperate with China Unicom. You can manually select a network by changing the setting to Manual Network Selection.

If the above problems can't be solved, you can call the international roaming customer service hotline+8618618610010 for free service feedback (free only when using Unicom mobile phone).

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