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Signal Information
To see more accurately the signal strength in digital mode, iPhone users can use the combination *3001#12345#*, then hold the power button until the slider appears and then press Home. To exit this mode, press this code again and then Home.
Call Forwarding to Voicemail
By dialing *#21#, iPhone users can have all their incoming calls sent straight to voicemail. This can be turned off by using the same code when you are ready to receive calls again.
Hide your number on outgoing calls
iPhone and Android users can hide their phone number on outgoing calls by using the combination #31#phone number. This feature allows you to hide your identity when making calls.
