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This is a weird issue. I have an Android Phone (Lenovo) and since I received an Android update last year, my phone's hotspot is non-detectable in Linux alone. It is perfectly visible in Windows 10(Dual boot on the same machine) as well as in other phones. Note that this issue is specific to that particular android device. The laptop easily detects other Wifi hotspots including phone hotspots. Coming to the distro, I have tried Manjaro (didn't detect here too) before switching to Ubuntu 19.10. Ubuntu actually detected the hotspot during first boot but since then, it hasn't worked. I am currently using Ubuntu 20.04 and the issue persists. Here are my adapter details.

   description: Wireless interface
   product: BCM43142 802.11b/g/n
   vendor: Broadcom Inc. and subsidiaries
   physical id: 0
   bus info: pci@0000:06:00.0
   logical name: wlp6s0
   version: 01
   width: 64 bits
   clock: 33MHz
   capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
   configuration: broadcast=yes driver=wl0 driverversion=6.30.223.271 (r587334) latency=0 multicast=yes wireless=IEEE 802.11
   resources: irq:18 memory:ab200000-ab207fff

Is there any fix possible?

EDIT: The issue seems that Channel 13 of WiFi is undetectable in Linux for this broadcom driver. Please let me know if there's a possible workaround.

Colorizer
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    Does this answer your question? [Broadcom BCM43142 WiFi drivers with AP mode to create hotspot for android devices](https://askubuntu.com/questions/635692/broadcom-bcm43142-wifi-drivers-with-ap-mode-to-create-hotspot-for-android-device) – Pilot6 Apr 28 '20 at 09:12
  • Do you know what channel the phones hotspot is using? – Jeremy31 Apr 28 '20 at 10:23
  • @Pilot6 no. My issue is not creating a hotspot in Ubuntu. But rather accessing my phone's hotspot which is not currently possible. – Colorizer Apr 28 '20 at 11:40
  • @Jeremy31 you are not asking about Wifi band right? In that case, I don't know. Is there a way to find out? – Colorizer Apr 28 '20 at 11:42
  • If its the band then it's 2.4GHz, same as laptop's. – Colorizer Apr 28 '20 at 12:01
  • I wanted to know the channel as there is a good chance that hotspot won't be detected on 2.4GHz on a channel higher than 11 with that wifi on Ubuntu – Jeremy31 Apr 28 '20 at 14:11
  • @Jeremy31. Thanks! I just found out that my hotspot is using channel 13. Is there a way to make ubuntu look up at that particular channel? – Colorizer Apr 29 '20 at 07:14
  • Not that I have found with Broadcom wifi – Jeremy31 Apr 29 '20 at 09:58
  • @Jeremy31 Okay. Thank you. I don't currently have a mean to change channel in my phone. But, atleast now I know where the problem lies! – Colorizer Apr 29 '20 at 10:19

1 Answers1

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I had the same problem with my Android phone & Ubutu .

Go to settings -> Portable hotspot -> Select AP band

Make it 2.4GHz same as laptop's.

Amit Tiwari
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