I’m using a Pixel 2 and originally had a GSM SIM and could use data while I was on a call. A while ago I changed to a CDMA SIM to try to resolve some coverage issues and I noticed that I can’t be on a cell call and still access cell data. This has burned me a few times such as pulling up to a car wash and needing to find a coupon code, or trying to get directions at a stop light while on a bluetooth call.
I know CDMA had this issue years ago, but I had assumed it no longer a thing. Is this by design still, or are there settings I need to change on my phone since I had been using GSM?
If it is by design, and since my coverage hasn’t dramatically increased, can I reuse my old GSM SIM, or is it a one-time use and I need to get a new replacement?