Is this phone support Volte

Make phone calls with Voice over LTE (VoLTE)

You can make high-quality phone calls with VoLTE on an iPhone 6 or later. To make these calls, both phones need to work with VoLTE.

Check your carrier and location

Whether you can use VoLTE depends on a few things:

• Your location, your account with your carrier, and the model of your iPhone
• The carrier, carrier account, location, and phone model of the person you're calling

Some carriers support VoLTE only in certain cities or area codes. Contact your carrier to ask about your area and account. 

You can check wireless carrier support and features for iPhone to see if your carrier supports VoLTE.

Turn on VoLTE

Some carriers turn on this feature by default. To find out if VoLTE is on, go to Settings > Cellular > Cellular Data Options > Enable LTE. If Voice & Data is off, tap it to turn on VoLTE.

If you see an error message

When you try to turn on VoLTE, you might see a message that says "Cannot Activate LTE Calls. To enable LTE Calls on this account, contact your carrier.” This can happen with some account types, including business lines, and on some carriers. Please contact your carrier for help.

You might see a message that says to insert a new SIM card. This can happen with older SIM cards. You might need a new SIM card to use VoLTE. Contact your carrier.

• Model A1549 (GSM)*/ Model A1522 (GSM)*
  • UMTS/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz)
  • GSM/EDGE (850, 900, 1800, 1900 MHz)
  • LTE (Bands 1, 2, 3, 4, 5, 7, 8, 13, 17, 18, 19, 20, 25, 26, 28, 29)
• Model A1549 (CDMA)*/ Model A1522 (CDMA)*
  • CDMA EV-DO Rev. A and Rev. B (800, 1700/2100, 1900, 2100 MHz)
  • UMTS/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz)
  • GSM/EDGE (850, 900, 1800, 1900 MHz)
  • LTE (Bands 1, 2, 3, 4, 5, 7, 8, 13, 17, 18, 19, 20, 25, 26, 28, 29)
• Model A1586*/ Model A1524*
  • CDMA EV-DO Rev. A and Rev. B (800, 1700/2100, 1900, 2100 MHz)
  • UMTS/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz)
  • TD-SCDMA 1900 (F), 2000 (A)
  • GSM/EDGE (850, 900, 1800, 1900 MHz)
  • FDD-LTE (Bands 1, 2, 3, 4, 5, 7, 8, 13, 17, 18, 19, 20, 25, 26, 28, 29)
  • TD-LTE (Bands 38, 39, 40, 41)

Make phone calls with Voice over LTE (VoLTE) - Apple Support

https://support.apple.com/en-in/HT203078