How to test a dual SIM device?

[xfive]

Hello,
I have made an IoT device with two SIMs so that if one service provider’s signal is poor, the other provider can be used.

The problem is I do not know how to test my device properly, end to end. I want to some how make the signal from one provider poor so that I can verify that my device switches from one provider to the other.

Are there any EMC testing labs out there that provide this facility?

I have a large budget and snd can pay for this service.

Thanks

 

[kellys_eye]

Nearly all providers will have a service availability map for your location. Print out the maps from the two providers you are using then go to the areas where the signal strength overlap favours one or the other.

Your phone will default to the strongest signal.

Basic - but cheap.