Coldtail
Let me save you a little heartache. I ordered that case from AliExpress because I wanted the camera protector ring it includes. However, just for fun I tested my wifi signals before and after putting it in the bumper case.
Before
2.4GHz: - 32 dBm
5GHz: - 50dBm
In Aluminum Case
2.4 GHz: - 56dbm
5 GHz: - 85 dBm (random fallbacks to 2.4GHz)
Basically it is terrible for your phone signal. To the point of unless you are sitting in front of your router you will experience slower speeds and latency. Can’t speak to mobile data but I would highly suggest finding another case if you care about your phone signal.
