LG G5 (LS992) Will It Move Over From Sprint To T-Mobile As Part And Work After 3G Retirement

I think your question was answered since Sprint LG G5 version does not have VOLTE setting, but this is my experience which hopefully might help someone with a similar situation: I have an LG G5 that's always been on TMobile network. In September I got a text from TMobile suggesting to activate the VOLTE setting, which I did. That indicates that TMobile provisioned functionality for my LG G5. Also, the IMEI checker said it was approved for activation in September 2021, so it is apparently on the whitelist during the mandatory VOLTE rollout. That same week a store attendant contradicted information on the website and insisted that I need to replace the phone "because LG stopped making phones in 2021". However, I  think that was a lie because TMobile normally sends a text message directly to the phone when it needs to be replaced, which I did not receive and in November 2021, TMobile website still has an LG G5 support page.