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most importantly: I am monitoring a cell phone out of the country. Once the user arrives overseas, they will change sim cards to a european sim. Will this service still work? Also, I will not be able to send text messages to the phone while on the european sim, so can I activate the target phones microphone via the online dashboard? when user plugs phone into itunes and or upgrades the software, will the target phone no longer be jailbroken? does the remote listening on the iphone 4s version use the speakerphone version of the microphone or the version of the microphone in use when the target phone is in handset mode? what is the cheapest option I can purchase and still have the ability to do the environmental listening, because that is all that I want.