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Why can Huawei mate40pro only set the ringtone by default card 1?

The default is generally card 1, but the ringtone can be set separately. Questioners can refer to the following steps:

1, enter settings, click sound, and then select ringtone and notification. Here, the questioner can find the settings of card 1 ringtone and card 2 ringtone.

2. Click the ringtone of 1 card, select a ringtone, and click OK to exit.

3. Select the ringtone of card 2, select another ringtone, and confirm the exit.

Dual-card dual-standby mobile phone refers to a mobile phone, which can hold two SIM cards at the same time, and both cards are in standby state. Dual-card dual standby in the market generally refers to dual-card dual standby of the same network standard, that is, GSM network dual-card dual standby, CDMA network dual-card dual standby, PHS network dual-card dual standby; Dual card dual standby mainly refers to the first case, namely GSM dual card dual standby. Dual-network dual standby is the combination of GSM network and CDMA network. A mobile phone can plug in two number cards of different networks at the same time and turn them on at the same time. Users can dial, answer and send and receive short messages at will without switching networks, and use 3G/4G to surf the Internet anytime and anywhere, so that business people can enjoy the freedom of mobile office and the fun of rest and entertainment.