The module PIN is required to access the information in the security module of yourSIM card. The signing PIN may be required for the digital signature. The barringpassword is required when using the call barring service.To set how your phone uses the access codes and security settings, select settings >security.Set which SIM card to useYou can set which SIM card to use for making calls, sending messages, or uploadingand downloading data. If you name your SIM cards, you can see at a glance, forexample, which is for work and which is for personal use.Select SIM manager.Select or . The selected SIM is always used when making calls, sendingmessages, or uploading and downloading data.Set your phone to always ask which SIM to useSelect .Set a function to use a specific SIMSelect .Rename a SIMSelect SIM name, then write a name.The settings for the SIMs remain, even if you swap the SIMs around.Lock the keys and screenTo avoid accidentally making a call when your phone is in your pocket or bag, lock thekeys and screen of your phone.Press the lock key.Unlock the keys and screenPress the lock key, then swipe the screen left or right.Tip: You can answer or reject a call with the call or end key even if you have lockedthe keys and screen.Basic use 17