1. Make sure that there is Czech keyboard in Settings > General > Keyboard > Keyboards.
2. Additionally, make sure that Automatic or Czech is selected for the Czech keyboard in Settings > General > Keyboard > Hardware Keyboard.
3. The Czech language code is CS, represented by the numeric 7, 7.
4. The language at L3 can be any Roman alphabet language. The initial factory setting is English.
5. The language at L4 can be any language. The initial factory setting is none.
6. The Czech language can be set at either L3 or L4.
7. To set the Czech language at L3, press L3 + L1, 6, 7, 7.
8. To set the Czech language at L4, press L3 + L1, L4, 6, 7, 7.
9. To unset the language at L4, press L3 + L1, L4, R1.
10. Roman alphabet letters and common keyboard symbols are as in Rivo alphabet layout and Rivo symbols layout.
11. Letters with diacritic accent marks in Czech can be typed as follows:
| é | R2 + 1 |
| ě | R2 + 1, 1 |
| ť | R2 + 2 |
| ú | R2 + 2, 2 |
| ý | R2 + 2, 2, 2 |
| ó | R2 + 3 |
| á | R2 + 4 |
| ď | R2 + 4, 4 |
| ž | R2 + 4, 4, 4 |
| ř | R2 + 5 |
| í | R2 + 6 |
| š | R2 + 7 |
| č | R2 + 7, 7 |
| ů | R2 + 8 |
| ň | R2 + 9 |
12. Additional symbols can be typed in symbol mode as follows:
| € | R2 + 6 |
| £ | R2 + # |