single loss

I have a max transit cat 18 with poynting 7-in-1-4x-cellular-wifi-gps Antenna. I get 200 down on my iPhone 13 then win I got to the Pepwave it one gets 20 or 30. I am running Tmobile home connect wireless my mane internet is At&t and it does the something I hope someone has a answer for this. Thank you for your help

If you’re stating your download speed is 200Mbps when the SIM is in your iPhone and 20-30Mbps when the SIM is in the Pepwave, it sounds like you need to adjust your TTL on the Pepwave to 64. I’ll admit though, it’s hard to understand your setup using what you described above.

I will try it again my set ups in a rv . I have a Pepwave max transit cat 18 with Poynting 7 an 1 antenna. I have a at&t SIM card in the router at this time. then I have a T-Mobile home connect for back up I hookup the T mobile using wireless wan. it does not matter witch one I hook to it seems the Pepwave cut the single down. I don’t take the SIM card out of my phone I just use it to test single.

If you’re using WiFi WAN and connecting to the Peplink wireless, you should expect your speed to basically be cut in half.

can I connect the Tmobile router to the lan port through a Ethernet switch

No, because that would provide internet from the Max Transit to the T-Mobile router. If T-Mobile is your primary connection and the Max Transit is your redundant connection, then place your setup like this:

T-Mobile Router LAN Port → Max Transit WAN Port →