Incorrect.Actually, one cannot patent an information processing method, algorithm or software, so the patent is not about how it is done, but the hardware for doing it (and hence the use of ROMs in the Mac to prevent cloning).
You can patent any process, algorithm and even software functions/code if it meets certain criteria. That criteria is fairly simple and clear.
Citation source
Federal law dictates eligibility for patents, and to receive one, ideas must meet four requirements: the invention must have utility; it must be novel; it must not have been obvious to a person having ordinary skill in the art at the time the invention was made, and it must be thoroughly explained and documented so that someone else would be able to make it.
Nokia came up with the methods and processes that were new and novel at the time and clearly documented so they were reproducible. Thus it met the criteria to have a patent.
A "standard" typically starts off as an invention of some sort.Second, patents should not be awarded for ideas that are not novel or innovative - a standard is not an invention.
A "standard" only becomes such when it is widely adopted.
You take something that seems common place today and assume it always was. Someone had to invent it. In this case, it was Nokia.