Go to Settings > Touch ID & Passcode. On devices without Touch ID, go to Settings > Passcode: Tap Turn Passcode On. Enter a six-digit passcode. Or tap Passcode Options to switch to a four-digit numeric code, a custom numeric code, or a custom alphanumeric code. Enter your passcode again to confirm it and activate it.
Wales uses the same currency as the rest of the United Kingdom, the British Pound Sterling.
Highest banknote: 100 (in Scotland and Northern Ireland) and 50 (in England and Wales) The pound sterling is the world's oldest currency still in use and it is the fourth most traded currency in the foreign exchange market, after the United States dollar, the euro, and the Japanese yen.