What Is IMS? The Hidden Network Behind VoLTE, Wi-Fi Calling and 5G Voice
Two phones, same network, same SIM type, same four bars of 4G. One makes calls perfectly. The other can browse all day but every call fails or goes...
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IMS APN
VoLTE Explained: The Things Nobody Tells You About 4G Calling
Your phone shows four bars of 4G. Mobile data flies. WhatsApp works, the web works, the banking app works. Then you try to make an ordinary phone call...