| Clue | Source | Date |
|---|---|---|
| Some flip phones | Universal | 25 Aug 2024 |
| Some cells | LA Times Daily | 28 Dec 2019 |
| Some cells | The Washington Post | 28 Dec 2019 |
| Once dominant cell phones | Wall Street Journal | 18 Mar 2019 |
| Once dominant cell phones | ||
| The first fully portable mobiles | Newsday | 16 Sep 2017 |
| Some cell phones | The Washington Post | 05 Jan 2017 |
| Some Finnish cell phones |