why both SIM does not work at once ?

[Android Central Question]

While calling from SIM 1 can not receive call from SIM 2

 

[B. Diddy]

Welcome to Android Central! Which phone? Do you know if it's dual standby or dual active SIM? https://gadgetguideonline.com/andro...m-android-phones-dual-standby-vs-dual-active/. It sounds like your phone is dual standby, not dual active.

 

[alexismunoz]

Same situation. Dual sim is ON. At first, it worked. But after few days, it stopped working. I am using note 9. If I'm on call using sim 1, nobody can call me on my sim 2 and vice versa.