WhatsApp Delivery Reports Not Working? 9 Proven Ways to Fix

📚 Table of Contents

Why Does WhatsApp Delivery Reports Not Working Happen?
Method 1: Check the Recipient’s Internet Connection
Method 2: Verify the Recipient’s Phone Number
Method 3: Ensure You Are Not Blocked
Method 4: Check Your Own Internet Connection
Method 5: Clear WhatsApp Cache (Android) or Offload (iPhone)
Method 6: Update WhatsApp to Latest Version
Method 7: Restart Your Phone and WhatsApp
Method 8: Reinstall WhatsApp Without Losing Data
Method 9: Disable VPN and Switch Networks
Frequently Asked Questions (FAQ)
External Resources (DoFollow)
Related Guides & Hub

You send a message on WhatsApp, but the check marks stay at a single gray tick (message sent) and never turn into double gray ticks (message delivered). This WhatsApp delivery reports not working issue means your messages are reaching WhatsApp’s servers but not the recipient’s device. Consequently, you cannot confirm whether your important messages have arrived. Fortunately, this guide provides 9 proven methods to restore delivery reports on Android and iPhone. Most fixes take less than 5 minutes and do not require advanced technical skills. Let’s explore why WhatsApp delivery reports not working happens and how to fix it.

Why Does WhatsApp Delivery Reports Not Working Happen?

The WhatsApp delivery reports not working issue typically stems from recipient-side problems, network issues, or privacy settings. For example, the recipient’s phone may be offline or in airplane mode, preventing message delivery. Furthermore, an incorrect or outdated phone number saved in your contacts can block delivery. Additionally, being blocked by the recipient will result in single gray ticks indefinitely. Poor internet connectivity on your end, outdated WhatsApp versions, or corrupted app cache can also cause delivery failures. Understanding the WhatsApp tick system is essential: a single gray check means the message has left your device; two gray checks confirm delivery to the recipient’s device; two blue checks indicate the message has been read. When WhatsApp delivery reports not working, you never see the second gray check. Let’s fix this step by step.

Method 1: Check the Recipient’s Internet Connection

Step 1: Understand that delivery reports require the recipient’s device to be online and connected to WhatsApp servers. If their phone is off, in airplane mode, or has no internet, the message will stay at one gray tick.
Step 2: Ask the recipient through an alternative channel (SMS, phone call, or another messaging app) to check their internet connection.
Step 3: Ask them to open WhatsApp and stay connected for a few minutes. Once their device reconnects, undelivered messages will be delivered automatically.
Step 4: If you cannot contact them, wait a few hours. Most people reconnect their phones within 24 hours.
Step 5: For group chats, if delivery reports are not working, one or more members may be offline. WhatsApp only shows delivered when the message reaches all members’ devices (except those who have left).

✅ Expected Result: Once the recipient comes online, the single gray tick changes to double gray ticks, confirming delivery.

⚠️ Note / Warning: You cannot force delivery if the recipient’s device is off. Patience is key. If the message remains undelivered for more than 24 hours, consider alternative contact methods.

Why This Works: Therefore, the WhatsApp delivery reports not working issue is often simply because the recipient is offline. No technical fix on your end is needed.

Method 2: Verify the Recipient’s Phone Number

Step 1: Open the chat where WhatsApp delivery reports not working occurs.
Step 2: Tap the contact’s name or number at the top to view their info.
Step 3: Check if the phone number is saved correctly with the full international format (e.g., +1 for US, +44 for UK, +91 for India).
Step 4: If the number is missing the country code, add it by editing the contact.
Step 5: If the number is correct, ask the recipient to confirm they are using the same number on WhatsApp. They may have changed numbers without notifying you.
Step 6: After correcting the number, resend the message or ask them to message you first.

✅ Expected Result: After verifying and correcting the phone number, messages are delivered successfully and double gray ticks appear.

Why This Works: Consequently, an incorrect or incomplete phone number prevents WhatsApp from routing the message to the correct recipient.

Method 3: Ensure You Are Not Blocked by the Recipient

Step 1: If messages to a specific contact consistently show only one gray tick and never turn into two gray ticks, you may have been blocked.
Step 2: Look for other signs: no profile photo visible, no “last seen” or “online” status, and calls do not connect.
Step 3: Ask a mutual friend if they can see the contact’s profile photo and last seen. If they can but you cannot, you have likely been blocked.
Step 4: Note that when blocked, messages are sent (one gray tick) but never delivered (no second gray tick) and never read (no blue ticks).
Step 5: If confirmed blocked, there is no technical fix. Respect the other person’s decision and do not attempt to contact them through alternative means.

✅ Expected Result: You identify that the WhatsApp delivery reports not working issue is due to being blocked, not a technical problem.

Why This Works: Therefore, WhatsApp intentionally prevents delivery reports to blocked senders. Recognizing this saves hours of unnecessary troubleshooting.

Method 4: Check Your Own Internet Connection

Step 1: Open your browser and visit a website. If it loads slowly or not at all, your connection is weak.
Step 2: Run a speed test using Ookla Speedtest. WhatsApp requires at least 0.5 Mbps upload for messages.
Step 3: Toggle airplane mode on, wait 15 seconds, then turn it off.
Step 4: Switch from Wi-Fi to mobile data (or vice versa).
Step 5: If other contacts’ messages are being delivered normally, the issue is specific to one contact (see Methods 1–3). If no messages deliver, your own connection is the problem.
Step 6: After restoring a stable connection, resend any undelivered messages.

✅ Expected Result: With a stable connection, your messages are sent and delivered, showing double gray ticks.

Why This Works: Consequently, the message must be uploaded from your device to WhatsApp’s servers. A poor upload connection prevents the message from even being sent, resulting in a spinning clock or single gray tick that never progresses.

Method 5: Clear WhatsApp Cache (Android) or Offload (iPhone)

Step 1 (Android): Settings → Apps → WhatsApp → Storage & cache → Clear cache (NOT “Clear data”).
Step 2 (Android): Force stop WhatsApp, then reopen.
Step 3 (iPhone): Settings → General → iPhone Storage → WhatsApp → Offload App.
Step 4 (iPhone): After offloading, tap “Reinstall App”.
Step 5: Open WhatsApp and send a test message to a contact who previously showed delivery failures.

✅ Expected Result: Clearing corrupted cache removes temporary files that may have blocked the delivery acknowledgment from being processed.

Why This Works: For example, a corrupted message delivery queue can prevent the app from updating the tick status. Clearing cache forces a fresh start.

Method 6: Update WhatsApp to Latest Version

Step 1: Open Google Play Store (Android) or App Store (iPhone).
Step 2: Search for “WhatsApp”.
Step 3: If an “Update” button appears, tap it to install the latest version.
Step 4: After updating, restart your phone.
Step 5: Test delivery reports by sending a message to a trusted contact.

✅ Expected Result: Updated WhatsApp includes bug fixes for message delivery and acknowledgment issues.

Why This Works: Therefore, older versions may have known delivery report bugs that are fixed in newer releases. Keeping the app updated is essential.

Method 7: Restart Your Phone and WhatsApp

Step 1: Force close WhatsApp completely (swipe it away from recent apps).
Step 2: Restart your phone.
Step 3: After reboot, open WhatsApp and go to a chat where WhatsApp delivery reports not working occurred.
Step 4: Send a test message. If delivery reports now work, the issue was a temporary glitch.
Step 5: For previously sent undelivered messages, they may still show one tick; ask the recipient to message you or resend those specific messages.

✅ Expected Result: Restarting clears temporary background process glitches that may have prevented delivery acknowledgment.

Why This Works: Consequently, a stuck process in WhatsApp or the OS can block the delivery report handler. A full restart resets everything.

Method 8: Reinstall WhatsApp Without Losing Data

Step 1: Backup your chats: WhatsApp Settings → Chats → Chat backup → Back up to Google Drive (Android) or iCloud (iPhone).
Step 2: Uninstall WhatsApp completely.
Step 3: Restart your phone.
Step 4: Reinstall WhatsApp from official app store → Verify your number.
Step 5: Restore from backup when prompted.
Step 6: Send a test message to verify that delivery reports are now working correctly.

✅ Expected Result: A clean installation resolves any deep-seated corruption affecting the delivery reporting system.

Why This Works: Therefore, if the delivery report module was corrupted, reinstalling rebuilds it from scratch.

Method 9: Disable VPN and Switch Networks

Step 1: If you use a VPN, disconnect it completely.
Step 2: Switch from Wi-Fi to mobile data (or vice versa).
Step 3: Open WhatsApp and send a test message.
Step 4: If delivery reports now work, the issue was VPN or network-related (blocking delivery acknowledgment packets).
Step 5: Reconnect your VPN only after confirming delivery reports work, or switch to a different VPN server that supports WhatsApp traffic.

✅ Expected Result: On a non-VPN or different network, delivery reports function normally, and double gray ticks appear.

Why This Works: For example, some VPNs block the specific ports or protocols used by WhatsApp for delivery acknowledgments. Disabling the VPN restores full functionality.

Frequently Asked Questions (FAQ)

1. What is the difference between delivery reports and read receipts?

Delivery reports (double gray ticks) confirm the message has reached the recipient’s device. Read receipts (double blue ticks) confirm the recipient has opened and viewed the message. The WhatsApp delivery reports not working specifically refers to the lack of double gray ticks.

2. Why does one message in a chat show delivered but another does not?

This can happen if the recipient’s phone goes offline between messages. The first message may have delivered while they were online; the second may have been sent after they went offline.

3. Can I force delivery of a message that shows only one gray tick?

No. You cannot force delivery if the recipient’s device is offline or they have blocked you. Resending the message does not help; it will also stay at one tick until the recipient comes online.

4. How long should I wait before assuming a message will never be delivered?

If a message shows one gray tick for more than 24 hours, it is likely the recipient has blocked you or their phone number has changed. For temporary offline status, most people reconnect within 12 hours.

5. Do delivery reports work in group chats?

Yes, but with a nuance: double gray ticks appear when the message is delivered to all members of the group. If some members are offline, the ticks may stay gray or take longer to appear.

6. Will clearing WhatsApp data delete delivery reports history?

Clearing data will reset your local chat database, but delivery reports are server-side and will be restored upon reinstallation. However, clearing cache (Method 5) is safer and does not delete chats.

7. Why do delivery reports work on Wi-Fi but not on mobile data?

Your mobile carrier may block or throttle WhatsApp traffic. Check with your carrier or use a VPN (but test without VPN first). You can also enable “mobile data always active” in Developer Options (Android).

External Resources (DoFollow Links)

🔗 This guide is part of our Social Media Troubleshooting Hub

✍️ HowToFixPro Team
Our team has tested these methods on Android 14 (Samsung, Pixel) and iOS 17 (iPhone 14, 15). Each fix is verified as of June 2026.
Last updated: June 9, 2026

How to Fix WhatsApp Delivery Reports Not Working (9 Proven Methods)