InGenious The Mobile Phone Jail
About this deal
McDonagh, Darragh. "An average of 12 phones are seized in Irish prisons every week". TheJournal.ie . Retrieved 2018-01-27.
Inmate Telephone Systems | GTL Inmate Telephone Systems | GTL
An automatic 24/7 detect and locate solution such as this bypasses the weaknesses inherent to jamming (e.g., phones of facility workers can be jammed); managed access solutions (surrounding neighborhoods can be affected by the "bleed" from these systems preventing bystanders from making calls and/or not all makes of phones are subject to call intercept); and phone sniffing dogs (this solution only works when the dogs are patrolling). New solutions have been introduced to the market that provide such automated 24/7 detect and locate capabilities.b) transmits, or causes to be transmitted, any image or any sound from inside a prison by electronic communications for simultaneous reception outside the prison is guilty of an offence. Special dogs have been used to sniff for cell phones coming into prison walls. Mobile phones have a unique scent, and these dogs have been trained to detect it. 
How to jailbreak your iPhone or iPod Touch - Digital Trends How to jailbreak your iPhone or iPod Touch - Digital Trends
iPhone 15 Pro's slightly curved edges (left) compared to the sharp edges of the iPhone 14 Pro Max. Prakhar Khanna / Digital Trends
In 2015, prison guards Romero Nobrega in Brazil found a cat that was used to smuggle cell phones into the prison. Four phones, four chargers and seven cards were found on it, and the prison administration carried out an unsuccessful search.  Section 40D of the Prison Act 1952 (as inserted by section 23 of the Offender Management Act 2007) provides: The gist of my job involved setting prisoners up to make their phone calls with the outside world and then listening in on all the catty prison gossip. The company I worked for changed hands to Verizon Business for about a month during my tenure, then it wound up owned by Global Tel Link, but when I started it was with MCI. The only reason I bring that up is to point out that services like mine aren't run by the government or through the prison system. Big ol' corporations handle the work, and their primary concern is making a profit. Hence, one of my main jobs was making sure nobody dared to try a three-way call. Not because phone shenanigans, including three-way calls, can and have led to actual prison escapes -- but just because it cheated my employers out of like, 20 cents.