Tmobile home wifi gateway affects phone service

iTinkeralot wrote:

If you do receive 4 bars according to the LED display that should be a pretty good signal but it helps to know the cellular metrics and understand the details of the 5G source delivery. With the T-Mobile home internet mobile application on your cell phone you can obtain the cellular metrics (RSRP, RSRQ, SINR) which provide more detail about both the 4G LTE and the 5G NR signals the gateway receives. In order to KNOW the true nature of the cellular reception this is important. The chart below can be used to understand what the metrics are reporting. 

If the signal quality is not good and there is higher noise then this will have a direct impact on things like VoIP calling which is not tolerant of packet damage or delays. The bars on the gateway might be high but is it due to the 5G or the 4G LTE signal? That is important to know. The signal quality RSRQ and signal noise SINR need to be good or performance can suffer.

The other part of the equation is the phone. If the phone has an earlier wireless adapter pre 802.11ax or needs driver updates this can also impact performance. It still could come down to limited bandwidth on the cell and bandwidth throttling might be causing some disruptions to the VoIP streams. 

Great info. I checked the advanced metrics and almost all of those and only the RSRQ in 5g seems to be good with the rest being in the poor range. its odd that I feel like the streaming, and even overall speed is excellent. I'm getting a consistent 270 mb down and 15 up. I guess I'll have to try moving the gateway around the house again. 
Can you think of any reason why it would directly impact the cell service of each cell phone while only connected to the gateway? The phones in question are iPhone 11 and iPhone 13 Pro and both struggle to stay connected only when using the gateway.