If your code fails on 100% of devices, testing with 1 device will catch it. If your code fails with 99% of devices, testing with 5 different devices will almos

If your code fails on 100% of devices, testing with 1 device will catch it. If your code fails with 99% of devices, testing with 5 different devices will almost certainly catch it. Etc. Which is to say, you won't catch obscure bugs, but you'll catch wide-spread bugs. And wide-spread bugs are exactly the ones you want to catch before general release.