In some situations you can’t or don’t want to take a call: on a noisy street, at dinner, in a crowded office. What would you like: Block all calls with a busy signal? Reply with an auto-SMS to let people know of your (un)availability? Forward calls and SMS to someone else? CSF will help you do all this and more: choose if you want to block calls, SMS or both, create black- or whitelists, block hidden numbers or schedule the date and time when the blocking filters should change automatically.
