How to sniff 2G/3G/4G signals

Dear ARM friends,

I want to capture 2G/3G/4G signals, from mobile phones or stations, by mobile phone or PC.

I want to use signal strength for indoor positioning.

It is relatively easy to capture WiFi and Bluetooth signals by mobile phone or PC.

If you have any suggestions, please tell me.

I want to hear from you!

Honggui Li


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