Not getting VoLTE on iPhone XS
Just re-contract and got a new iPhone XS, and I don't seem to be getting the VoLTE, in fact was not getting VoLTE on my previous iPhone 7 Plus either (same SIM card).
On 4G network with fast Internet, and when in a call, dropped to 3G with extremely slow Internet. This happened not specific to any particular location ... Punggol, Serangoon, Lavender, Bugis, Raffles Place, Harbour Front ...
I understand this is not a 'new issue', and apparently StarHub SHINE team need to perform certain check to have this VoLTE on my phone? Please kindly advise. Thank you.