IPhone XS mobile phone maintenance without service failure

Machine model: iPhone XS

Malfunction: No service on mobile phone.

Maintenance process:

An iPhone XS mobile phone, the fault is that only 3G signal is plugged into Unicom card, and there is no service when plugging into other operators’ mobile and telecom SIM cards.

IPhone XS mobile phone maintenance without service failure figure 1

These three major operators are not normal, generally caused by the damage of RF chips.

IPhone XS mobile phone maintenance without service failure figure 2

IPhone XS mobile phone maintenance without service failure figure 3

The RF chip is under the card slot, and the heating platform and the air gun together remove the card slot, replace the RF chip, and then put it back into the card slot, and solve the installation test failure.