Iphone 12 can't get a take-away call.

The possibility depends mainly on the location of the mobile phone, the network situation and the baseband model, which is difficult to solve, so we can only open a message service to let it push the missed call messages to me.

Check the baseband signal: Open the dialing interface of iPhone, enter *300 1# 12345#* in the dialing key, and then click the dialing key. If the field test is displayed, it means using Qualcomm baseband, and if the main menu is displayed, it means using Intel baseband. Qualcomm baseband view signal value method: click on the service cell to measure, and the number displayed by the measured RSSI reflects the current mobile phone signal strength; Intel baseband view signal value method: Click LTE-Serving Cell Meas, and the number after rsrp0 reflects the current signal strength.

Because dBm is calculated by logarithm, it is generally negative, that is, the smaller the absolute value of signal parameters, the better the signal.