There have been quite a few discussions related to this topic
- Can I use my phone as a WiFi-WiFi hotspot? [duplicate]
- Turn On Both Wifi and Wifi Hotspot [duplicate]
- How to use Wi-Fi and hotspot at the same time on Android?
- How to use Android in Wi-Fi repeater mode by bridging Wi-Fi with Access Point? [duplicate]
Most of the answers conclude that this is not possible without hacking the software by rooting or using additional hardware (e.g. Bluetooth tethering). However, I recently found that my Pixel 5 is able to achieve this.
I was in a hotel room that limits 2 devices per room so I had to turn on my phone's hotspot for my tablet. I found that the IP address that websites were seeing from my tablet was actually the IP address of the hotel WiFi, not my mobile carrier's IP address. This proves that my tablet was indeed using the hotel's WiFi through my phone. I further confirmed that after turning off mobile data on my phone, the WiFi tethering still works.
Meanwhile, my older Android phone from 2018 does not support this. I also verified that iPhones don't support this either. WiFi and mobile hotspot are mutually exclusive.
My questions are
- Is this a feature specific to Pixel 5?
- If not, how can I tell if a phone supports this feature? (I mean other than actually test it)