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Question:
If a user needs to make a phone call and the signal bar inside her building is only displaying half, she may improve her signal by moving toward an outside wall. Because building materials such as concrete, metal, and insulation can weaken cellular signals, and signals can often penetrate more easily through windows or other openings in outside walls. By moving closer to an outside wall, the user may be able to improve her signal strength and make the call successfully. Alternatively, she could try asking to join the Wi-Fi network of the building and use a Wi-Fi calling feature, if available, to make the call.