Have you got the issue sorted out? I am travelling in US, and experiecing the same issue: IMS not registered. As a result, I am not able to make and receive phone calls. Mobile data and text message are working ok.I have OnePlus 13 running OxygenOS...
I got this issue resolved with following steps:1. Clear Messages cache and data (device Settings->Apps->All apps->Messages app->Storage and cache->Clear cache)2. Uninstall Messages updates (device Settings->Apps->All apps->Messages app, tap on three ...
