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Fix Tesco Mobile Calls Failing

Complete step-by-step guide to resolve call connection problems on your Tesco Mobile device. Fix dropped calls, call failures, and audio issues with our expert troubleshooting methods.

Quick Fix Summary

  • Check signal strength - ensure adequate reception for calls
  • Restart your device - clears temporary call connection issues
  • Toggle airplane mode - resets network connections
  • Check call barring settings - ensure calls aren't blocked
  • Update device software - fixes call-related bugs

Common Symptoms of Call Issues

  • Calls failing to connect
  • Dropped calls during conversation
  • Can't hear the other party
  • Other party can't hear you
  • Poor call quality or static
  • Calls going straight to voicemail
  • Error messages when making calls
  • Delayed call connection
  • One-way audio (can hear but not be heard)
  • Calls failing in specific locations

Call Issue Diagnosis

Select the type of call problem you're experiencing for tailored solutions:

Calls Not Connecting

Issues with call initiation and connection

Dropped Calls

Calls disconnecting during conversation

Audio Problems

Poor sound quality or one-way audio

Multiple Issues

Experiencing several different call problems

Call Quality Assessment

Rate your current call quality to help identify the issue:

Poor Fair Good Excellent
Tip: Call quality issues are often related to signal strength or network congestion.
1
Quick Fixes
2
Call Settings
3
Advanced Solutions
4
Contact Support

Step-by-Step Troubleshooting Guide

Follow these steps in order to resolve your Tesco Mobile call issues

Basic Troubleshooting Steps

Start with these simple solutions that fix most call problems

1

Check Signal Strength

Ensure you have adequate signal strength (at least 2-3 bars) for making calls. Move to a different location if signal is weak.

Pro Tip: Higher locations or near windows often have better reception for calls.
2

Restart Your Device

Completely power off your phone, wait 30 seconds, then turn it back on. This clears temporary glitches that may affect call functionality.

3

Toggle Airplane Mode

Turn on airplane mode for 10-15 seconds, then turn it off. This resets all network connections and can resolve call issues.

Note: This will temporarily disconnect all wireless connections including data and Wi-Fi.
4

Check for Network Outages

Visit the Tesco Mobile service status page to see if there are reported call issues in your area.

Check Service Status Now

Call Settings Configuration

Check these call-specific settings that may be affecting your calling ability

5

Check Call Barring Settings

Ensure call barring is not activated on your device, which could prevent outgoing or incoming calls.

How to check call barring:
Device Settings Path
iPhone Settings > Phone > Call Blocking & Identification
Samsung Phone app > More options > Settings > Block numbers
Android Phone app > More > Settings > Blocked numbers

Also check with Tesco Mobile by dialing 4455 to ensure no call barring is active on your account.

6

Check Call Forwarding

Ensure call forwarding is not activated, which could send your calls to another number or voicemail.

To disable call forwarding: Dial ##002# and press call. This will deactivate all call forwarding.

Important: Some call forwarding settings might be reactivated after network changes. Check this setting periodically if issues persist.

Audio Quality Test

Test your device's audio functionality to identify microphone or speaker issues:

Advanced Solutions

If basic steps didn't work, try these advanced troubleshooting methods

7

Reset Network Settings

This will clear all network-related settings and restore them to defaults. You'll need to reconnect to Wi-Fi networks afterward.

Important: This will erase saved Wi-Fi passwords, Bluetooth pairings, and VPN settings.

For iPhone: Settings > General > Reset > Reset Network Settings

For Android: Settings > System > Reset Options > Reset Wi-Fi, Mobile & Bluetooth

8

Update Device Software

Ensure your phone's operating system is up to date, as updates often include improvements to call functionality and network connectivity.

For iPhone: Settings > General > Software Update

For Android: Settings > Software Update > Download and Install

9

Check SIM Card

Remove your Tesco Mobile SIM card, inspect it for damage, clean the gold contacts gently, and reinsert it properly.

  • Power off your device before removing the SIM
  • Ensure the SIM is properly seated in the tray
  • Check for visible damage or corrosion
10

Try Wi-Fi Calling

If available on your device and plan, enable Wi-Fi calling to route calls through Wi-Fi when cellular signal is weak.

Tesco Mobile Wi-Fi Calling: Available on compatible devices. Ensure you're connected to Wi-Fi and enable Wi-Fi calling in your phone settings.

For iPhone: Settings > Phone > Wi-Fi Calling

For Android: Settings > Connections > Wi-Fi Calling

Device-Specific Solutions

Select your device type for tailored troubleshooting instructions

iPhone
Samsung
Huawei
Other Android

iPhone Specific Fixes

  • Update Carrier Settings: Settings > General > About > Wait for carrier update prompt
  • Reset Network Settings: Settings > General > Reset > Reset Network Settings
  • Check Do Not Disturb: Settings > Focus > Ensure Do Not Disturb is disabled
  • Wi-Fi Calling: Settings > Phone > Wi-Fi Calling > Enable if available

Samsung Specific Fixes

  • Network Mode: Settings > Connections > Mobile Networks > Network Mode > Select "LTE/3G/2G (Auto)"
  • VoLTE Calls: Settings > Connections > Mobile Networks > Enable VoLTE Calls
  • Reset Network Settings: Settings > General Management > Reset > Reset Network Settings
  • Call Settings: Phone app > More > Settings > Check all call-related settings

Huawei Specific Fixes

  • Network Settings: Settings > Wireless & Networks > Mobile Network > Preferred network type > 4G/3G/2G auto
  • VoLTE: Settings > Wireless & Networks > Mobile Network > Enable VoLTE calls
  • Reset Network Settings: Settings > System > Reset > Reset Network Settings
  • Call Enhancements: Settings > Apps > Phone > Storage > Clear cache

Other Android Devices

  • Network Operators: Settings > Network & Internet > Mobile Network > Advanced > Automatically select network
  • Preferred Network Type: Settings > Network & Internet > Mobile Network > Preferred network type > Try different options
  • Reset Network Settings: Settings > System > Advanced > Reset options > Reset Wi-Fi, mobile & Bluetooth
  • Call Settings: Phone app > Settings > Check all call-related options

Success Story

★ ★ ★ ★ ★

"My Tesco Mobile calls kept dropping every few minutes. The Wi-Fi calling suggestion completely solved the problem since I have strong Wi-Fi at home. Thank you for the excellent guide!"

- Emma R., Birmingham

Still Having Call Issues?

If our troubleshooting guide didn't solve your problem, try these additional resources

Contact Tesco Mobile Support

For account-specific issues or if you suspect a network problem, contact Tesco Mobile directly.

  • From your Tesco Mobile: 4455
  • From any phone: 0345 301 4455
  • Online chat: tescomobile.com

Check Related Issues

Your call problem might be related to other common Tesco Mobile issues.

Visit a Tesco Store

If you've tried all troubleshooting steps, visit a Tesco store with a mobile department for hands-on assistance.

Tip: Bring your phone, Tesco Mobile SIM card, and proof of identity for faster service.
Contact Our Support Team

Our experts can provide personalized assistance for your specific Tesco Mobile issue