Even without any tariff plan, even without any SIM, users can make lifetime free calls from their smartphones, Make your phone a walky-talky free.

Without any tariff plan, even without any SIM, users can make lifetime free calls from their smartphones. Can be surprised to hear the thing, but it is completely true.

 In fact, with a free Android app, the user can make free calls with the help of Bluetooth. With this app, the user can turn two smartphones into walkie-talkies.

# Must be in the range of Bluetooth
There is a fixed range of Bluetooth. It works within a maximum of 100 meters. In such a situation, it is necessary to be in range when you are calling Bluetooth.  

Also, for Bluetooth calling, these apps must be in both smartphones. There is no charge for talking to this. Together you can convert two smartphones into Walkie-Talkie from this app.

# App TestWe found this app installed on two smartphones and tested it. During this call the call was immediately connected and the sound was also clear for 50 meters.  

After this, as the distance increased, the disturbance started coming in the voice. During this a user was inside the hall and one was out.

Here is the available some use full  apps.

      1. Zello PTT Walkie Talkie

      2. Online Walkie Talkie Pro
 
      3. Police Walkie-Talkie Radio Sim
 
      4. Walkie Talkie Free Calls 2018
 
      5. Walkie-Talkie
 
      Many other apps also exist on the Google Play Store.