Originally Posted by
BigFlyer
Turning off data roaming does not turn off roaming phone calls. So an incoming call conditionally forwarded to voicemail or accidentally answered could incur roaming charges. You just tape your removed SIM card to the inside of your phone case and you won't lose it.
Indeed -- but turning it off in the SIM manager (Android) or switching "Turn on this line" to off (iPhone) has the same basic effect as rem

ving the SIM.