I want to connect to a mobile phone from an ESP32 module using BT/BLE so that the ESP can access the internet from the mobile phone connection whether wifi or cellular. I think this is traditionally called tethering or perhaps BT PAN. I have found a few fragments relating to this around BTStack and…

[image] harryscsi: I think this is traditionally called tethering Tethering is usually called distributing the Internet via WiFi. I'm not even sure that the ESP32 is capable of connecting to the Internet via BT

I believe it's somehow doable on ESP IDF, but why don't you tether over wifi aka hotspot ?

Search the forum, somebody else had the same situation in the last couple of weeks. There may have even been sample code associated with one of the Bluetooth modules.

OK for clarification the BT connection is mandated by the client. Standard wifi will be used when available but in the event of failure the devices need to connect to individuals co located mobile. I found this which seems to suggest it will do what I need but I cant get this to work: examp…

I tried but really cant see anything - if you can find it please let me know

Tethering, also known as a mobile hotspot or phone-as-modem, allows a mobile device to share its internet connection with other devices like laptops, tablets, or even other phones. It effectively turns the phone into a wireless router or modem, enabling connected devices to access the internet throu…

Obviously client can ask whatever he wants, but the whole case has no sense according to information provided here. There is mobile with internet, why should it tether it over bluetooth instead of wifi? Frequency is same... Range is lower..

Sorry for the apparent confusion. The ESP device is part of a system that requires internet to operate. Normally the ESP connects via wifi however, when wifi is not available then the ESP needs to connect to the users cellphone via BT to allow continued operation. The client does not want to have h…

Sorry, that still doesn't make sense. It is no problem to pair a BT device with a cell phone, but what is supposed to happen then?

BLE/BT connection to mobile ohone for internet access

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horace June 4, 2025, 8:08am 2

if you have local WiFi with internet access probably simpler to use that

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BLE/BT connection to mobile ohone for internet access

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