| Field | Mobile phones |
| Went Obsolete | Early 2000s |
| Made Obsolete By | By the introduction of 3G mobile technology |
| Knowledge Assumed | Some fingers and half a brain |
| When useful | Not likely |
Those of us in Ye Olde United States often still have 2.75G (EDGE) cell phones at best; only you fancy Europeans and Japanese have 3.5 or 4 or whatever you're up to nowadays.
N.B. In the UK at least 3G coverage, and/or adoption, is still sparse to non-existent; leaving 2G and 2.5G, GSM phones the most common portable telecommunications standard. This is also true for Australia, especially the cheaper pre-paid phones.
And still the case in Finland, home of Nokia.