I'm looking for a device that can connect to my home network via WLAN and can pass on the network (i.e. Has a mobile hotspot) so that I can connect other devices with it. I need this because selected devices are limited by a timeout and can no longer connect to the Internet of our FritzBox from 3:15 a.m. With the mobile hotspot you would be connected to another network and I could work around the problem. Is there such a thing? (I know that it works with PCs and laptops, for example, but I'm looking for a cheap alternative.)
Not an old cell phone
Yes
Modern cell phones all have a hotspot function today.
but why don't you reprogram your fritz-box, so that e.g. Is only guest access limited in time?
then you can leave your "selected" devices online around the clock.
You don't want to bypass your parents' usage restrictions by chance?
A trusting conversation would be better.