Solving Call Drops: Why It Happens and How to Fix It

Few things are more frustrating than being in the middle of an important business call or a conversation with a loved one, only to have the audio turn robotic, go completely silent, or abruptly disconnect. "Call dropping" is a widespread issue in densely populated areas of India. While telecom operators frequently face the blame due to tower congestion, the root cause is often linked to smartphone software configurations or hardware interference.

Before you decide to port your number to a different operator, try these proven troubleshooting steps to drastically improve your network stability and voice quality.

1. The "5G Fallback" Problem (Disable 5G temporarily)

India's 5G rollout is massive, but voice calling over 5G (VoNR) is still in its infancy. For most operators (especially Airtel's NSA network), when you make or receive a voice call while connected to 5G, your phone must instantly perform a "fallback" handover to the 4G LTE network to process the audio. If you are in an area with a weak 4G signal but a strong 5G signal, this sudden handover fails, instantly dropping the call.

The Fix: Go to your phone's Settings > Mobile Networks > Network Mode and temporarily change it from "5G Auto" to "LTE/4G Only." Test if your calls stabilize. If they do, leave it on 4G for voice reliability until the operator optimizes towers in your area.

2. Ensure VoLTE is Enabled

VoLTE (Voice over LTE) is absolutely mandatory for clear calls in 2026. Without it, your phone drops down to the archaic 2G network to make a call, resulting in terrible audio quality and instant disconnects if data is used simultaneously.

On iPhone: Go to Settings > Mobile Service > Mobile Data Options > Voice & Data. Ensure the "VoLTE" toggle is switched ON.
On Android: Go to Settings > Connections > Mobile Networks. Turn ON the switch for "VoLTE Calls." (Note: Reliance Jio strictly requires VoLTE to make any calls at all).

3. Turn on Wi-Fi Calling (VoWiFi) for Indoor Issues

If your calls drop frequently while you are inside your house or office, the issue is likely building materials. Thick concrete, metal roofs, and tinted glass are notorious signal blockers.

The Fix: Enable Wi-Fi Calling. This built-in feature routes your cellular voice calls through your home broadband router instead of the cell tower outside. Go to your phone's settings, search for "Wi-Fi Calling," and turn it on. For best results, set the Calling Preference to "Wi-Fi Preferred." Read our full VoWiFi guide here.

4. Reset Network Settings

Over time, smartphones accumulate cached network profiles, corrupted APNs, and conflicting Bluetooth data that can interfere with the radio antenna's ability to maintain a steady handshake with a cell tower.

The Fix: You can wipe these clean without deleting your photos or apps. Go to Settings > System/General > Reset Options > Reset Network Settings. Your phone will reboot. You will need to re-enter your Wi-Fi passwords, but it forces a completely fresh connection to the telecom operator's core network.

Hardware Check: SIM cards have a lifespan. If your physical nano-SIM card is over 4 or 5 years old, the gold contact pins may be scratched, oxidized, or worn down, causing micro-disconnects inside the tray. Visit an operator gallery and request a "SIM Replacement/Upgrade" for a fresh chip, or convert it to an eSIM.

Frequently Asked Questions (FAQ)

I've tried everything, and calls still drop. What can I do?

If software tweaks and SIM replacements don't work, the issue is tower congestion (too many people, not enough bandwidth). You can log an official "Network Complaint" through the Airtel Thanks, MyJio, or Vi apps. If the issue persists for weeks, your best option is to use MNP to port to the operator that has the closest physical tower to your home.

Can a mobile cover cause call drops?

Yes! Thick, heavy-duty phone cases that contain metal plates, magnetic rings, or dense metallic paint can severely interfere with the radio waves trying to reach the antenna bands wrapped around the edge of your smartphone. Try making calls with the case removed to see if performance improves.