>by the time you have it worked out, the phone is obsolete and very few people still use it.
If you work out a phone from 5 years ago, you're not that far off from a phone of today. Nobody designs it all from scratch, you mostly modify the old one. Getting the foundations going will take years - adapting the foundation to a different phone of the same series will only take months.
If you work out a phone from 5 years ago, you're not that far off from a phone of today. Nobody designs it all from scratch, you mostly modify the old one. Getting the foundations going will take years - adapting the foundation to a different phone of the same series will only take months.