My IT skills don't really extend too much into phones and cellular stuff. If this should be in the other thread regarding Spark stability moderators please shift this to there.

I have an issue withe calls from and to cellular phones. The call will have micro dropouts. These can be for a few seconds or drop completely. I have used my SIM in my Nothing Phone (3a) and an aging iPhone 15 Pro Max and experiencing the same. Days can go by without issue then bam the problem returns. Some days are worse than others. I live in central Hutt Valley and have a strong 4G connection but no 5G connection. A sort hop from home gives me a good 5G connection and I have noted that the issue occurs away from home as well as at home.

Both handsets are full updated to current versions of their respective OS and all Apps are updated. I have cleaned the SIM and examined it for damage to the best my aging eyes can manage. The phone is a vital lifeline for me and I am anxious about losing connectivity entirely. Any ideas folks?