I am looking for a pocket device that you can connect it to a

There are plenty of travel routers that do that. It gives you a single connection to the hotel's wifi or Ethernet and lets you connect as many devices to it that you want.

I'm not going to do your googling for you.

hap lite powered via powerbank. dunno why did you post hap and not hap lite on op pic.

Literally a mikrotik mAP Lite with a power bank or USB wall charger

>>60774899
hap ac*

op should check out mAP and mAP lite too since he is looking for a pocket device, could be good too if he is mostly using wlan and 1 or 2 ports is enough, if not enough hap lite could be good

might be able to do it by connecting another wifi adapter to an android phone via usb-otg