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As you point out it is not possible to receive WiFi while also sharing an internet connection. I would also risk saying that no device is going to allow hot spot sharing while receiving data from a dongle. At the point you're willing to purchase a dongle why can't the other device just use the WiFi or use the dongle? Why do you need to do it this way?
There used to be videos on YouTube about how to share your devices network using a cable. I did this for some time with a laptop but I'm not sure if a cellular device can get network from a wired connection. If anyone is doing it you're more than likely to find it on YT.
THANK YOU very much for your help. I made a TERRIBLE mistake in this post and confused the phones I have. I will now explain better my intentions in detail.
-The condition is: I have a Philips Smart TV in the living room with IPTV installed but have no Internet and I only live there 2 month per year. There is a free public wifi nearby with NO login. It was a public project that required authentication but the project ended and they kept it without logins. My walls are thick and I can´t get signal inside NOT EVEN cellphone signal (thats amazing). I only have to move 5 Meters to the window to have both with pretty good conditions. I also have the IPTV APP installed on my cellphone but its not good idea to see on data mobile because I dont have unlimited data, I have 30gb per month and a footbaal game costs 4 gb of traffic. Anyway the solutions see to be quite as few except if you have a btter one eheheh:
1- (my mistake). I have a Huawei phone with android 8 and in a perfect world I just put it on the window (a little outside, can get rain), pickup the free internet and hotspot it to the TV and my other phone, the new Samsung Galaxy Zfold5. Its not possible with the Huawei but IT WAS with my Samsung yesterday, the hotspot worked and I could see TV without many fails.. so...so far....."problem solved". Its not very practical but its better than nothing?
2-I have a USB 10 meters long and could connect it to a laptop with a USB wifi pen outside to make hotspot.
3-I could also use a Ubiquiti antena to pickup signal and create a lan inside the house..so..
I think so far I will keep to the Samsung phone solution but, in a perfect world there will be some kind of Android whaterproof box or maybe a better phone inside a waterproof box with a small powerbank to last a few good hours..what do you think about this ideia?? If such thing doesnt exist I can get a cheaper better phone just to be inside the box, is this thinking "outside the box" or not?? LOLOLOL
