I don't know if we are talking about the same thing, but I use a RAVPower WD009 from Amazon. There is a recent app update that corrected the lack of function that ios 16.XX caused. I have been testing it again with the new app and it's better than ever. It logs into any Wifi 2.4Gb network and rebroadcasts it's own WiFi network on both 2.4 and 5Gb with support for up to 5 devices. It has it's own internal 6700 mah battery that doubles as a power bank, and I get 10+ hours of stand alone service on a full charge or you can run it with a USB power input.

My home 2.4 service tops out at around 80Mbps and the unit registers up to 70Mbps down. Range is around 50 ft. max, but solid for a hotel room, cruise cabin, or auto, motorhome, etc. I have used it on cruises where you pay by device, so having one line shared saves a ton of money, and you can run it in Guest Mode if you choose. I intend to try it out on airlines with the free T-Mobile in flight service so that I can use my iPads instead of only my phone for service.

There is a newer version called NewQ, on Amazon for $80 that looks identical with great reviews. My unit is at least 4-5 years old and still working fine. Here's an Amazon link: