As a population, yes. Very few people have what it takes in terms of knowledge and determination to survive on their own in the wilderness (think Bear Grylls from Man vs. Wild
). The vast majority of people are so used to technology that they panic at the loss of a phone or Internet connection. It's not their faults either. As a species, we've evolved to make use of technology by inventing and using tools. We lack things like an extra layer of fat to keep us warm at night or sharp claws and teeth to kill prey with.
As individuals, we may have flaws that would make it very hard to survive without things like periodic medical assistance or organ transplants. For example, people that require a puffer for asthma or insulin injections for diabetes would obviously be at greater risk (in a world where technology suddenly stopped working).
Things like computers and phones are both a tool and a comfort. But things like medical technology or advanced food production techniques, now that stuff will be missed more by those that know their stuff. Anyway, I definitely think we have an over-dependence on technology.