Activate BSNL 4G VoLTE Services by Sending SMS Request

 Do you know how to activate BSNL VoLTE services on your mobile SIM card to get the fastest wireless data speed on 4G LTE services, Just check the syntax and send the SMS code to activate 4G LTE technology in your service area.

Activate BSNL 4G VoLTE Services by SMS

BSNL started VoLTE services in many areas (Voice Over Long Term Evolution), for this to activate the same, the customer has to replace the existing SIM card with 4G if not replaced already, and also can send an SMS to activate VoLTE services from that

BSNL customers have to activate VoLTE service by sending the SMS from their mobile handset, where the GSM mobile services will be activated if their handset is compatible with BSNL VoLTE services, else they will get a reply as your handset is not compatible with Voice Over Long Term Evolution service.

  • VoLTE Activate Code: ACT VOLTE
  • SMS Sent to53733
Subsequently, after activation of VoLTE services with the above, customers have to set network mode in the mobile network settings in their mobile handset with any of the following settings
  • LTE Preferred Mode
  • LTE / WCDMA / GSM Auto
  • VoLTE Enabled.
VoLTE customers have to upgrade their handset with the latest software provided by their handset manufacturer, If VoLTE customers are using a Dual SIM handset, then they are requested to use BSNL 4G SIM in the first slot to avail of 4G and VoLTE services.


1. My mobile is 4G but received an SMS about non-compatibility.

Please send SMS from the 4G coverage area, and maybe your device is not compatible with VoLTE services.

2. Is this VoLTE activation mandatory for those who already installed BSNL APNs?

BSNL APN is the gateway to allow the high-speed mobile internet, and VoLTE is the facility to be activated on mobile which is mandatory to enjoy data through APNs.

3. Is there any charges for the activation of BSNL 4G VoLTE facility through SMS?

At present, there are no charges, and it is a free facility for all prepaid and postpaid GSM mobile customers.

4. Why do I have to use BSNL 4G SIM in the first slot only?

Maximum mobile devices in the market support all the services through the first SIM slot, so it is recommended to use BSNL 4G SIM in the first slot rather than the second one, If your mobile supports the second slot for all services, then you may use this also.

Thanks For Reading, Have a nice day :)

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