Do not turn on IMS for RTT when there is no SIM am: 0c6d28bf

                updateVolteFeatureValue(request);

                updateWfcFeatureAndProvisionedValues(request);

                updateVideoCallFeatureValue(request);

                boolean isImsNeededForRtt = updateRttConfigValue();

                // Only turn on IMS for RTT if there's an active subscription present. If not, the

                // modem will be in emergency-call-only mode and will use separate signaling to

                // establish an RTT emergency call.

                boolean isImsNeededForRtt = updateRttConfigValue() && isActiveSubscriptionPresent();

                // Supplementary services over UT do not require IMS registration. Do not alter IMS

                // registration based on UT.

                updateUtFeatureValue(request);