Restart your device, reinsert the SIM, move to an open area, or check for outages.
Building materials may block signal. Use Wi Fi Calling for improved connectivity.
Enable VoLTE or Wi Fi Calling, update software, or switch network modes.
Congestion, maintenance, weather, or outages may affect signal quality.
Yes. It improves indoor call quality when signal is weak.
Yes. Metal or magnetic accessories may interfere with the antenna.