Galaxy A Series: How to use and manage dual SIM cards?
If you insert two SIM or USIM cards, you can have two phone numbers or service providers for a single device.
To activate SIM or USIM cards:
Step 1. Go to setting
Step 2. Tap on connections
Step 3. Select SIM manager
Step 4. Now you can tap on Sim 1 or Sim 2 and Tap one or both of the switches for the SIM or USIM cards to activate them.
Note:
If both cards are activated, you can receive calls and messages on each card.
However, if you are on a call using one card, the other card cannot be used to receive new calls. Unable to disable all SIM cards at once.
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