The iPhone dialer has letters below the numbers. Why did Apple include them on this screen? In other phones it is used for T9 keyboard or contact search.



Some phone numbers are tailored to use a mnemonic "lettered" version to be more easily remembered. Think of an insurance company running a commercial on TV and its goal is that you call their number.
If they use 1-800-INSUR-ME, it'll probably be more easily remembered than 1-800-4678763.

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  • 3
    So, what's your mnemonic for this? – Iszi Aug 22 '12 at 19:06
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    There's a name for this keyboard layout, too, which is E.161. The layout originated in American telephones for telephone exchange names during the 1930s. – William C Aug 22 '12 at 19:32
  • @Iszi The mnemonic is the song, duh. Oh one one eight, nine nine nine. Eight eight one nine nine. Nine oneonenine, seven two five...... three. – user253751 Aug 5 '15 at 22:29

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