1. Make sure that there is an English keyboard in Settings > General > Keyboard > Keyboards.
2. Additionally, make sure that Automatic, U.S., Australian or Canadian English is selected for the English keyboard in Settings > General > Keyboard > Hardware Keyboard.
3. The English language code is EN, represented by the numeric 1, 9.
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 English language can be set at either L3 or L4.
7. To set the English language at L3, press L3 + L1, 6, 1, 9.
8. To set the English language at L4, press L3 + L1, L4, 6, 1, 9.
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.