SIM 1 not installed.

[jj3877]

I have just got my Zenfone 6 however I can't get SIM 1 to work. There is nothing wrong with the sim because I have 2 and I can swap them around. The sim card at slot 2 will always be detected.

I have tried everything. I am running the latest firmware, I have factory reset my phone. I even tried to add some tape to the back of the sim card to make it thicker. None of it work.

[Anders_ASUS]

First time I have heard of this.  First you can check in settings --> network & internet --> SIM card. If you can't activate it here, then please contact your ASUS service center.