They use "mobile dialler" apps that involve VoIP (Voice over Internet Protocol) to place calls at a fraction of regular rates.
VoIP is restricted in the
A dialler user said he can call 1,000 minutes to
"I can use mobile diallers to call any mobile or landline. The receiver doesn't need the same app or a smartphone," he said.
"The voice quality's good, better than
The diallers are downloadable on many smartphone models and work over 3G and Wi-Fi networks.
Similar unlicensed "net to phone" services exist in the market but they need a computer to dial out from.
The mobile diallers offer the same service on the go.
The centres were operating without a TRA licence — the premises were raided and the equipment seized.
Police warned that the public can be held responsible if caught making "illegal phone calls".
A series of similar arrests have been made in the past few months in
A dialler dealer said the servers hosting the services, which are legal in many countries, are located outside the
Users' mobile dialler accounts are topped up when the dealer receives the payment. One dealer said a popular way of paying is by transferring mobile phone credit to the dealer.
"There's no need to meet or discuss the deal. You just transfer mobile phone credit — instead of cash — to me and I'll turn on your mobile dialler account," he said.
"When you're finished, call me and I'll give you a new code."
Most Popular Stories
- Obama Administration Releases Proposal to Regulate For-Profit Colleges
- Elizabeth Vargas' Husband Marc Cohn Addresses Rumors
- Keurig Adds Peet's coffee, Alters Starbucks deal
- Quiznos Files for Chapter 11
- U.S. to Relinquish Gov't Control Over Internet
- Is Malaysian Airlines Flight 370 in Andaman Sea?
- Koch Brothers Step up Anti-Obamacare Campaign
- SoCalGas Reaches Record Spend on Diversity Suppliers
- Vybz Kartel Convicted of Murder
- U.S. Consumer Sentiment Falls in Early March