Blocking Cell Phone Signals in Sri Lanka: Which Frequency Band to Choose?

If you plan to block mobile phone signals in Sri Lanka, it is essential to know the frequency bands used by the various country's network providers.

Network Suppliers and Frequency Bands in Sri Lanka

In Sri Lanka, there are several major network suppliers. Here are the exact names of these suppliers and the frequency bands they currently use:

• Dialog axiata PLC: Dialog axiata is one of the main network suppliers in Sri Lanka. It mainly uses frequency bands 900 MHz, 1800 MHz and 2100 MHz for its mobile telephone services.
• Mobitel (PVT) Ltd.: Mobitel is another popular network supplier in Sri Lanka. It uses frequency bands 900 MHz, 1800 MHz, 2100 MHz and 2,600 MHz for its mobile telephone services.
• Hutchison Telecommunications LANKA (PVT) LTD.: Hutchison Telecommunications Lanka is also a well-known network provider in Sri Lanka. It uses frequency bands 900 MHz, 1800 MHz, 2100 MHz and 2,600 MHz for its mobile telephone services.
• Airtel Lanka (PVT) Ltd.: Airtel Lanka is a network supplier established in Sri Lanka. It mainly uses frequency bands 900 MHz, 1800 MHz and 2100 MHz for its mobile telephone services.

Now that we know network suppliers and frequency bands used in Sri Lanka, we can determine which frequency band to cover to block mobile phone signals. To obtain an effective blocking, it is recommended to cover the frequency bands most commonly used by network suppliers.

Common Frequency Bands in Sri Lanka

The most common frequency bands in Sri Lanka are as follows:

• 900 MHz: This frequency band is used by all the network suppliers mentioned above. It is mainly used for voice calls and data transmission.
• 1800 MHz: This frequency band is also used by all the network suppliers mentioned above. It is used for voice calls and high-speed data transmission.
• 2100 MHz: This frequency band is used by all the network suppliers mentioned above. It is mainly used for high-speed data transmission, in particular for mobile data services.

By covering these three frequency bands (900 MHz, 1800 MHz and 2100 MHz), you will be able to effectively block mobile phone signals in Sri Lanka, by preventing phones from accessing mobile networks.