In 2 of 2 of cases where I've used krazy-glue to try to fix something in an electronic gadget, the stuff wicked into a connector and ruined the device. So I da

In 2 of 2 of cases where I've used krazy-glue to try to fix something in an electronic gadget, the stuff wicked into a connector and ruined the device. So I dare say, if the phone isn't the waterproof type, just dribble some of that stuff in there e.g. through the SIM drawer slot and bye bye. I usually terminate truly obsolete gadgets that could still contain recoverable login information etc. by physically destroying the motherboard, e.g. by drilling into it or prying off the flash chip. But for non-removable battery types that's iffy; what if you short out the battery and cause it to catch fire? I've just recently found a usable charge a 2012 vintage LiPo battery that came with a robot kit that hadn't been built in all those years.