iPhone XS Max, strange Bluetooth/WiFi Behavior

[steka]

Hi,

i have an iPhone XS MAX which performs really weak on Bluetooth/Wifi.

Example:
Stretching my Arm out while having the phone in my pocket will cancel the bluetooth connection between my applewatch and the iphone (no, i'm not a gorilla).

There are multiple more occasions, like bluetooth audio in the car which won't work if i have the phone in my pocket, or WiFi being significantly weaker compared to an iPad or iPhone X that are on the same spot.
I remember that with my iPhone X i was able to take calls while being in the next room in my house.

I tried completely resetting the iPhone (not from Backup), but it didn't fix the issue.

My thought is : if the antenna module for wifi/bluetooth was broken, it wouldn't work at all. But mine works just worse than what i'm used to from my iPhone X.

Anybody has any suggestions?

 

[freeagent]

We were in the country last weekend, and I had my KEF MUO playing some music that my wife liked near the fire pit. I walked away to grab something from the car, and made it about 45 feet away before I heard her yelling. I would say bring it in for repair. I can shoot a signal from upstairs to the basement no problem.