WhatsApp Not Sending Messages: Causes and Quick Fixes

Your WhatsApp messages stuck on single tick? Let's see why and fix immediately.

Quick fix (TL;DR)

1. Check internet connection (Wi-Fi or mobile data)
2. Verify if WhatsApp is down on downdetector.com
3. Force close the app and reopen
4. Update WhatsApp from Play Store / App Store

The 7 most common causes

1. No or unstable internet connection
2. WhatsApp servers down (rare but happens)
3. App not updated (very old versions stop working)
4. Device storage full
5. Revoked app permissions (network or background)
6. Airplane mode active
7. Recipient's number deactivated/changed

Step-by-step guide

Step 1 — Check connection

Open browser and try a website. If it doesn't load, problem is internet, not WhatsApp:

• Wi-Fi: try toggling off and on
• Mobile data: verify credit or data plan active
• Restart router if at home

Step 2 — Check if WhatsApp is down

Go to downdetector.com or search "WhatsApp down" on Twitter/X. If reports spike, wait: usually resolves in 30-60 minutes.

Step 3 — Force close

Android: Settings → Apps → WhatsApp → Force stop. iPhone: double swipe up, swipe WhatsApp up.

Reopen the app. Often this is enough.

Step 4 — Restart phone

Full restart (not just app). Solves more stubborn network and cache issues.

Step 5 — Update WhatsApp

Go to Play Store or App Store, search WhatsApp and update. Old versions can stop working when WhatsApp updates security protocols.

Step 6 — Check permissions and settings

Android:

• Settings → Apps → WhatsApp → Permissions → verify "Phone", "Contacts", "Notifications" allowed
• Settings → Apps → WhatsApp → Battery → "Unrestricted"
• Settings → Apps → WhatsApp → Mobile data and Wi-Fi → "Allow background data"

iPhone:

• Settings → WhatsApp → verify access to Cellular, Notifications, Background App Refresh

Step 7 — Clear cache (Android)

In Settings → Apps → WhatsApp → Storage → Clear cache. ⚠️ Don't clear data: you'd lose all chats without backup.

Step 8 — Reinstall WhatsApp

Last resort:

1. Backup chats: WhatsApp → Settings → Chats → Backup → Back Up Now
2. Uninstall WhatsApp
3. Reinstall from Play Store / App Store
4. Verify number
5. Restore chats from backup

Common mistakes to avoid

• ❌ Don't install "WhatsApp Plus" or clones: ToS violation, permanent ban risk
• ❌ Don't uninstall before backup: you'd lose all chats
• ❌ Don't reply to messages asking for verification code: always a scam
• ❌ Don't use WhatsApp with unreliable free VPN: often blocked by servers

When it's the recipient's problem

If your messages send (double tick) but stay unread for days, it's possible the recipient:

• Has phone off or doesn't use it
• Disabled read receipts
• Blocked you (see FAQ)