Solve the problem of not answering and dialing the phone in dual-sim 4G mode

Here to Le 2 mobile phone as an example, different mobile phone problems may not be the same, for reference only.

Problem phenomenon: Mobile phone use two card, card 1 and card 2, data flow Select card 1 when there is no problem, card 1 and card 2 can call the normal. Data Flow Selection Card 2, card 2 online normal, but can not call to answer the phone, card 1 occasional leakage.

Problem reason: The mobile phone description has such a sentence: music video phone support dual 4G network, but at the same time can only call a 4G network, can not be used simultaneously.

Two phones can be registered in the 4G network, but only one 4G network at a time.

Two 4G cards by default are registered under the 4G network, although the data flow is only one card in the 4G, but another card also in the 4G network, should cause conflict.

Two different types of cards, such as Unicom and mobile should be no problem, but two cards of the same standard, and need to switch back and forth traffic, once the switch to the conflict card will appear above problems.

Solution:
If you need to use card 2 Internet, then you need to switch the card 1 network to 3G, and then switch to Card 2, the card 2 network mode set to 4G. Such a 3G, a 4G will not have a conflict. Vice versa.

Specific steps:
Card 2 on the 4G network:
1, select Mobile data Network for card 1, switching network mode for 3G network priority
2, select Mobile data Network for card 2, switching network mode for 4G network priority

Card 1 on the 4G network:
1, select Mobile data Network for card 2, switching network mode for 3G network priority
2, select Mobile data Network for card 1, switching network mode for 4G network priority