I was in the alarm industry since a young man. Saw thousands of Burglaries. Yes they do go in the front door more than any other entry. However they do not cut phone lines. That is only or mostly done in commercial and Industrial break in's by Professional. Not many Pro's in the home burglary.Even if they were to cut the phone line, the interior or outside siren would go off and they will go. They will look for the easiest house to get into. No sign of a alarm, or CCTV, Mostly corner homes. Homes where a lot of construction is going on nearby. (Workers that know the house is empty from Observing it), CCTV do result in Prosecution in both residential and commercial just like any other crime. Mostly done by Juveniles. Most happen during the day. House near schools where they walk by etc. Some do case the neighborhood. No lights on at night, house appears empty, no car in the driveway etc.