How to Make International Calls: Complete Guide 2025
Learn how to make international calls with 10 proven methods. Step-by-step instructions for free and paid options, dialing format guide, and money-saving tips.
Making international calls has become incredibly easy and affordable in 2025. Whether you're calling family abroad, conducting business internationally, or staying connected with friends overseas, there are multiple methods to make international calls—many of them completely free.
This comprehensive guide covers everything you need to know about making international calls, including step-by-step instructions for 10 different methods, dialing formats, cost comparisons, and expert tips to save money.
⚡ Quick Answer: How to Make International Calls
📋 What You'll Learn
- ✓ International dialing format and country codes
- ✓ 10 methods to make international calls (free and paid)
- ✓ Step-by-step instructions for each method
- ✓ Cost comparison across different services
- ✓ How to choose the best method for your needs
- ✓ Money-saving tips and common mistakes to avoid
- ✓ Troubleshooting call quality issues
🌍 Understanding International Dialing Format
Before diving into the various methods, it's essential to understand how to properly dial international numbers. Using the wrong format is the most common reason international calls fail.
Basic International Dialing Format
Key Components Explained
The + symbol is the international standard that replaces country-specific exit codes:
- USA/Canada: 011 (or just use +)
- UK: 00 (or just use +)
- Australia: 0011 (or just use +)
- Pro tip: Always use + for simplicity—it works everywhere
Every country has a unique 1-3 digit code:
- USA/Canada: +1
- India: +91
- UK: +44
- Philippines: +63
- Mexico: +52
- China: +86
- See complete country codes list
Many countries have area codes for different cities or regions:
- Drop the leading zero if present (e.g., London's 020 becomes 20)
- Mobile numbers may not have area codes
- Some countries like Singapore don't use area codes
The remaining digits of the phone number. The total length varies by country (typically 7-11 digits total including area code).
📞 10 Methods to Make International Calls
There are multiple ways to make international calls in 2025, ranging from completely free to budget-friendly paid options. Here's a comprehensive breakdown of each method with step-by-step instructions.
Method 1: Browser-Based Calling (BubblyPhone)
- ✓ No app installation required
- ✓ Recipient doesn't need internet
- ✓ Works on any device with browser
- ✓ Crystal clear call quality
- ✓ Pay-as-you-go, no commitments
- ✗ Small per-minute cost
- ✗ Requires internet connection for caller
- Visit BubblyPhone.com
- Click "Start Calling" to add credits ($5-$50)
- Enter the international number in + format (e.g., +91 98765 43210)
- Click "Call" and allow browser microphone access
- Start talking—recipient answers on their regular phone
Why it's great: Perfect when you need to call someone who doesn't have internet or apps installed. No downloads, no hassle—just open your browser and call.
Method 2: WhatsApp Calling
- ✓ Completely free
- ✓ Voice and video calling
- ✓ Over 2 billion users worldwide
- ✓ End-to-end encryption
- ✗ Both parties need WhatsApp
- ✗ Both need internet connection
- ✗ Can't call landlines
- Download WhatsApp on your smartphone (free on iOS/Android)
- Save the contact with international format (+country code + number)
- Open WhatsApp and find the contact
- Tap the phone icon for voice call (or video icon for video call)
- Wait for them to answer—no charges applied
Method 3: Skype
- Download Skype (available on Windows, Mac, iOS, Android)
- Create a free Microsoft account
- For Skype-to-Skype: Add contact and click call (free)
- For calling phones: Buy Skype Credit ($5-$50)
- Click "Call phones" and enter +country code + number
- Click dial—charges apply per minute
Method 4: Google Voice
- Sign up for Google Voice (US phone number required)
- Download the Google Voice app or use voice.google.com
- Click "Make a call"
- Enter +country code + area code + local number
- Click dial—per-minute charges apply automatically
- Check your balance in Settings → Payments
⚠️ Availability: Google Voice is only available for US residents with a US phone number.
Method 5: FaceTime Audio
- Ensure FaceTime is enabled on your Apple device
- Save contact with +country code format
- Open FaceTime app
- Select the contact and click the audio icon (not video)
- Wait for connection—completely free over internet
⚠️ Limitation: Both parties must have Apple devices with FaceTime enabled.
Method 6: Facebook Messenger
- Download Facebook Messenger app (free)
- Log in with your Facebook account
- Find the person in your Facebook friends or Messenger contacts
- Tap the phone icon at top right of the chat
- Start your free voice call
Method 7: International Calling Cards
- Purchase calling card from convenience store or online
- Scratch off to reveal PIN code
- Dial the access number (printed on card)
- Enter your PIN when prompted
- Dial the international number in full format
- Monitor remaining minutes (usually announced after each call)
⚠️ Watch Out: Many calling cards have hidden fees (connection fees, maintenance fees, expiration dates). Read the fine print carefully.
Method 8: Mobile Carrier International Plans
- Contact your carrier (Verizon, AT&T, T-Mobile, etc.)
- Ask about international calling plans or add-ons
- Activate the plan (may take 24 hours)
- Dial directly from your phone: +country code + number
- Charges appear on your monthly bill
💡 Pro Tip: Carrier plans are convenient but expensive. Compare with cheaper alternatives first.
Method 9: Viber
- Download Viber app (iOS/Android)
- Register with your phone number
- For Viber-to-Viber: Find contact and tap call icon (free)
- For calling phones: Buy Viber Out credits
- Use the dialpad to enter +country code + number
Method 10: Rebtel
- Download Rebtel app or visit rebtel.com
- Create an account and add credits or choose a plan
- Enter the international number
- Click call—charged per minute or unlimited (with plan)
💰 Cost Comparison: Which Method Is Cheapest?
| Method | To India | To Philippines | To Mexico | To UK |
|---|---|---|---|---|
| BubblyPhone | $0.01/min | $0.01/min | $0.01/min | $0.02/min |
| WhatsApp/Skype | FREE* | FREE* | FREE* | FREE* |
| Skype (to phones) | $0.02/min | $0.05/min | $0.04/min | $0.02/min |
| Google Voice | $0.01/min | $0.02/min | $0.02/min | $0.02/min |
| Calling Cards | $0.02-0.10/min | $0.05-0.15/min | $0.03-0.12/min | $0.03-0.10/min |
| Mobile Carrier | $2-5/min | $2-5/min | $1-3/min | $1-3/min |
*Free only when both parties have the app and internet connection
🤔 How to Choose the Best Method for You
Choose WhatsApp/Skype/FaceTime if:
- ✓ Both you and the recipient have the same app
- ✓ Both have reliable internet connections
- ✓ You're only calling other smartphones (not landlines)
- ✓ You want 100% free calls
Choose BubblyPhone if:
- ✓ You need to call landlines or mobiles without apps
- ✓ The recipient doesn't have internet or specific apps
- ✓ You want excellent call quality at low cost ($0.01-0.02/min)
- ✓ You prefer browser-based calling (no app installation)
- ✓ You make occasional calls and prefer pay-as-you-go
Choose Google Voice if:
- ✓ You're based in the USA
- ✓ You want competitive rates ($0.01-0.02/min)
- ✓ You prefer using Google ecosystem
Avoid Mobile Carrier Plans if:
- ✗ You only make occasional international calls
- ✗ You're looking for the cheapest option (they're 100-500x more expensive)
- ✗ You have access to internet for app-based or browser calling
💡 10 Money-Saving Tips for International Calls
1. Use WiFi Calling Apps First
If both parties have internet, use WhatsApp, Skype, or FaceTime for completely free calls. This should always be your first choice.
2. Use Browser-Based Services
When you need to call phones without apps, use browser services like BubblyPhone ($0.01/min) instead of carrier rates ($2-5/min).
3. Call During Off-Peak Hours
Some services offer lower rates during off-peak hours. Check if your service has time-based pricing.
4. Buy Credits in Bulk
Many services offer discounts when you purchase larger credit packages ($20-50 instead of $5-10).
5. Compare Rates by Country
Different services have different rates for different countries. Use our rate comparison tool to find the cheapest option for your specific destination.
6. Watch Out for Hidden Fees
Avoid calling cards with connection fees, maintenance fees, or expiration dates. Stick to transparent pay-as-you-go services.
7. Call Mobiles Directly
In many countries, mobile rates are the same or cheaper than landline rates. Always call mobiles when possible.
8. Use Text/Video When Possible
For non-urgent communication, consider free messaging apps or schedule video calls instead of voice-only calls.
9. Disable Carrier International Dialing
Accidentally dialing internationally through your carrier can cost $2-5/min. Contact your carrier to block international dialing if you never use it.
10. Track Your Usage
Monitor how many minutes you use per month. If you consistently call the same country, consider unlimited plans from services like Rebtel or Skype.
❌ 5 Common Mistakes to Avoid
1. Using Wrong Dialing Format
Mistake: Dialing without + or country code (e.g., just "12345678")
Solution: Always use international format: +country code + area code + local number
2. Not Removing Leading Zero
Mistake: Including the leading zero from area codes (e.g., +44 020 instead of +44 20)
Solution: Drop the leading zero when dialing internationally
3. Assuming All Apps Are Free
Mistake: Using Skype/Viber to call phones without checking rates
Solution: Understand that app-to-phone calls usually cost money, only app-to-app is free
4. Using Mobile Carrier Without Checking Rates
Mistake: Directly dialing from your phone without a plan ($2-5/min charges)
Solution: Always check rates first or use dedicated international calling services
5. Poor Internet Connection
Mistake: Using WiFi calling on slow/unstable internet (choppy audio, dropped calls)
Solution: Test your connection speed first (need 1+ Mbps). If poor, use services like BubblyPhone that route through phone networks for better quality.
🔧 Troubleshooting Call Quality Issues
If You Experience Poor Call Quality:
Echo or Delay:
- Use headphones to eliminate speaker feedback
- Reduce distance between you and router
- Close bandwidth-heavy apps (streaming video, downloads)
Choppy Audio:
- Check your internet speed (need minimum 1 Mbps)
- Switch from WiFi to mobile data (or vice versa)
- Ask others on your network to pause streaming
- Consider using services like BubblyPhone that use phone networks for better reliability
Call Drops Frequently:
- Switch to a more stable internet connection
- Move closer to your WiFi router
- Disable VPN (can cause connection issues)
- Update your calling app to the latest version
Can't Connect:
- Verify you're using correct international format (+country code)
- Check if you have sufficient credits/balance
- Ensure the recipient's number is active
- Try calling a different number to isolate the issue
🌏 Special Considerations by Region
Calling India
- Format: +91 [10-digit mobile number]
- Best Method: WhatsApp (96% penetration) or BubblyPhone ($0.01/min)
- Tip: Most Indians use WhatsApp—this should be your first choice
- Complete India calling guide →
Calling Philippines
- Format: +63 [10-digit number]
- Best Method: Facebook Messenger (highly popular) or BubblyPhone ($0.01/min)
- Tip: Filipinos are very active on Messenger—check there first
Calling Mexico
- Format: +52 [10-digit number]
- Best Method: WhatsApp or BubblyPhone ($0.01/min)
- Tip: Remove the "1" that was previously required before area codes
Calling UK
- Format: +44 [area code without 0] [local number]
- Example: +44 20 1234 5678 (London)
- Best Method: WhatsApp or BubblyPhone ($0.02/min)
- Tip: Drop the leading 0 from area codes (020 becomes 20)
❓ Frequently Asked Questions
Can I make international calls for free?
Yes, you can make completely free international calls using apps like WhatsApp, Skype, FaceTime, or Facebook Messenger—but both you and the recipient must have the same app installed and internet access. For calling people without apps or internet, low-cost services like BubblyPhone charge as little as $0.01/min.
What is the cheapest way to call internationally?
The absolute cheapest is using free WiFi calling apps (WhatsApp, Skype, etc.) when both parties have internet. For calling regular phones, BubblyPhone and Google Voice offer the lowest rates at $0.01-0.02/min to most countries. See our complete cost comparison.
Do I need to dial 011 before international calls?
No, if you use the + symbol (recommended). The + automatically replaces country-specific exit codes. On mobile phones, long-press the 0 key to insert +. This works everywhere and is simpler than remembering exit codes (011 for USA, 00 for UK, 0011 for Australia, etc.).
Can I call international numbers from my cell phone?
Yes, but be careful about costs. Calling directly through your carrier can cost $2-5/min without an international plan. Instead, use calling apps or services like BubblyPhone which work on your phone but charge much less ($0.01-0.02/min).
How do I call a US number from abroad?
Dial +1 (US country code) followed by the 10-digit phone number. Example: +1 212 555 1234 for a New York number. The same format works for Canada.
Why does my international call fail?
Common reasons: wrong dialing format (forgot + or country code), insufficient calling credits, the number is inactive, or your carrier blocks international calls. Double-check you're using +country code + full number format and verify you have credits/service enabled.
Is WiFi calling the same as international calling?
No. WiFi calling (provided by your carrier) lets you make calls using WiFi instead of cell towers, but you're still charged normal rates. For free international calls over WiFi, you need apps like WhatsApp or Skype. For affordable calls to regular phones over WiFi, use services like BubblyPhone.
Ready to Make Your First International Call?
Start calling internationally for as little as $0.01/min with BubblyPhone—no app installation required, crystal clear quality, and works on any device with a browser.