View single post by slychiu

Posted: Wednesday Jan 25th, 2023 12:46 am

Joined:	Saturday Apr 29th, 2006
Location:	Singapore
Posts:	5500
Status:	Offline

Note that the UCM/GSM does not support VoLTE ie Voice over LTE. Check wth the network provider if they use 3G, LTE or VoLTE,.

Try dialing in to the GSM Mobile number of the SIM card. If you hear a recorded message saying you cannot reach the subscriber, that indicates that there is a problem with the provider network - it may be using VoLTE or there may be no money in the SIM card
For instructions on disabling VoLTE using 4G and 5G SIM Cards please see this topic http://www.comfortforums.com/view_topic.php?id=5455&forum_id=48

Last edited on Saturday Nov 18th, 2023 03:04 am by slychiu

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