to use up all of your money in your phone
run out of credit
to listen to the messages read aloud again from the missed calls
listen to your voicemail
to power up your phone
recharge your phone
to connect your phone to another network in a different country
enable / disable data roaming
to text or email someone
leave a message
to make more friends with your phone
save and add a number to the contacts list
to type in a number
enter a number
to turn on the sound of the caller to hear his/her voice clearer
put a call / somebody on loudspeaker
to send money (phone credit) to your mobile phone
top up your mobile
to phone someone
make a call
to fail to connect to someone on the phone
lose the signal
to set your phone to silent mode
put the phone on silent