Why can't a mobile phone and two cards of mobile telecom receive 5g signals at the same time?

1, that's because he can only receive a signal from one mobile phone at a time. You can't press several cards to receive it, so it will be messy.

2. Maybe this mobile phone is not a dual 5G mobile phone, or it can't be used at the same time without turning on dual 5G in the settings. Go set it inside and open it.

3. By default, the dual 5G switch is off. If the dual 5G switch is not turned on, the secondary card will not display 5G: Turn on the dual 5G switch mode: Set the advanced dual card 5G for mobile data of mobile network. The secondary card only supports NSA. If the network is not covered by NSA, the secondary card will not display 5G.

4. If there are Unicom card and telecom card at the same time, when Unicom card is set as the main card, telecom should not be able to work normally.

5. Of course not. You can only have one mobile phone card, which shows the 5g signal. You can change it in the settings.

6. Under normal circumstances, the same 5G mobile phone supports 5G services provided by different operators, but a 5G mobile phone can only be connected to the 5G network provided by one operator at the same time. Specific to the introduction of mobile phone manufacturers shall prevail.