I too have this issue. Though mines a little different. I connected everything with the cables it came with, all new. Connected it to a HDMI 2.0 for the 4k resolution. I know the port works because my Playstation 4 Pro was connected to it.
When I powered it on the first time I saw the "Welcome" screen for like 2 seconds and then I get "signal lost" from my TV screen. Then a few seconds later the "Welcome" screen comes back, then "signal lost again" and back and forth, over and over.
I don't understand what it's doing and I'm one of those techy kind of people everyone else asks for help from. I figure the box is just bad, maybe comcast had these Flex boxes made cheap and they are all garbage. Does anyone know if the Xfinity Stores are open and accepting returns on these wonderfully reliable devices? I'd like to get a replacement and see if that works, but I'm already discouraged and don't expect any luck. And really the only reason I wanted this thing is for Peacock so I could watch the "Psych 2" movie on USA when it comes out.
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Everywhere I go Xfinity Mobile is slow unless connected to WiFi. I bought a new iPhone 11 when I signed up. Why is it so bad? I get around .45 Mbps with 169ms latency. <br>I can be sitting next to my lady who has Verizon prepaid and her 8 year old android dual core dinosaur out paces my iPhone 11 when it comes to data speeds. This is unacceptable. I’ve been with Xfinity Mobile 4 months and hate it. But I still have over $600 to pay on this iPhone. I need out of this so I can switch carriers. I would rather get a $40 Android from AT&T prepay
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