What's the soft permanently sticky adhesive used for attaching phone backs?

[e100]

It looks and behaves like the adhesive used on double sided sticky tape, but I need a liquid version so I can apply a thin bead.
The closest I've seen so far is "off'n on craft glue" which goes on white then dries/cures to clear and behaves like the repositionable adhesive used on "post it notes".

[coromonadalix]

i use pritt products, very thin double sided tape,  i dont recall the thickness

https://www.grandandtoy.com/en/product/442212-0_Pritt_Easy_Stick_Double-Sided_Adhesive_Film_with_Dispenser.aspx

[helius]

https://www.eevblog.com/forum/manufacture/about-the-glue-used-in-layer-laminated-products-and-many-modern-phonestablets/

[xrunner]

i use pritt products, very thin double sided tape,  i dont recall the thickness

https://www.grandandtoy.com/en/product/442212-0_Pritt_Easy_Stick_Double-Sided_Adhesive_Film_with_Dispenser.aspx

Yea I have the same stuff I've used to put under iPhone batteries after replacement. The tape contains adhesive "dots" that come off individually. Works well enough.