Hi paymanafza
welcome to the Apple (user-to-user) Community!
Re: Help Disabling Touch Controls on Lenovo Earbuds :
"However, I've noticed that whenever I touch the Lenovo earbuds, it either disconnects the call or activates Siri
You may want to see if Apple Support's online article (link below) can help trouble-shoot the disconnections:
If the sound from your wireless headphones cuts out or is distorted - Apple Support
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Re: "When I go to Settings > Bluetooth > (i),
I don’t see any specific settings for the earbuds since they aren't an Apple product."
Wondering if Lenovo makes available an app, or firmware updates, for the earBuds (ie: to keep them compatible).
You may have instructions that came with your the earBuds, or can contact the manufacturer's support webpage.
Pair a third-party Bluetooth accessory with your iPhone or iPad - Apple Support
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Re: "whenever I touch the Lenovo earbuds, it either disconnects the call or activates Siri". :"Does anyone know
how to disable the touch controls on third-party earbuds to prevent them from triggering any actions?"
Aha! You may be touching the earBuds in such a way that you accidentally turn those features off / on ?
I don't know how to disable the touch controls, however if you have Lenovo True Wireless Earbuds (Lenovo SE-631TWC) : This Lenovo webpage: may help you take control of the touch triggered actions.
Eg: says:
"Q: Does the Lenovo True Wireless Earbuds support touch functions?
A: Yes. Below is a list of touch commands:
To play/pause: Tap the touch panel of the left/right earbuds twice.
To Pick/Hang up call: Tap the touch panel of the left/right earbuds twice.
To Reject call: Press the left/right earbud touch panel and hold 2 seconds.
To next song/previous: Press the left earbud touch panel and hold 2 seconds to previous song.
Press the right earbud touch panel and hold 2 seconds to next song."
NB Siri: "Activate voice assistant: Tap the touch panel of the left/right earbuds 3 times".
NB: "Bluetooth disconnected into pairing mode: Tap the touch panel of the left/right earbuds 7 times".
To turn on/off earbuds manually: When the earbuds are not in the charging box,
press and hold for 5 seconds to turn on and 8 seconds to turn off."
All the best :-)