Always use the exit code or + symbol
From a Nigerian landline you must dial 009 before the US country code. On a mobile, pressing + replaces the exit code. Without this prefix your call will not leave Nigeria's domestic network.
Quick Answer
From Nigeria, dial 009 + 1 + area code + 7-digit number (or +1 from a mobile). Sayfone connects you to any US number for $0.08/min with clear call quality — no app needed on the other end.
$0.08
Per minute
+1
Country code
HD
Call quality
Landline rate
$0.08/min
Mobile rate
$0.08/min
Same per-minute Sayfone rate for landline and mobile.
Average call quality
Whether you're reaching family in Houston, coordinating with a university in New York, or handling business calls to Washington DC, the dialing steps are the same for every US mobile and landline number.
Steps at a glance
Sources
Confirms Nigeria's international direct dialing prefix is 009
US country code +1 under NANP
STEP-BY-STEP
Follow these steps to call any mobile or landline number in the United States from Nigeria. The format is the same whether you're calling a cell phone or a landline.
On a landline, dial 009. On a mobile phone, you can simply press and hold 0 to get the + symbol, which replaces the exit code automatically.
009 or +
Dial 1 — this is the country code for the United States and routes your call into the US telephone network.
009 + 1
Every US phone number starts with a 3-digit area code that identifies the city or region. For example, 212 is New York City, 202 is Washington DC, 713 is Houston, and 310 is Los Angeles.
009 + 1 + 212
Enter the remaining seven digits of the US phone number. This completes the full 10-digit US number after the country code.
009 + 1 + 212 + 555 0123
Your full dialing string should look like 009 1 212 555 0123 from a landline or +1 212 555 0123 from a mobile. Press call and your connection will be routed to the US.
+1 212 555 0123
Dialing format reference
+1
Use these patterns when entering a full international number to +1.
Mobile
+1 (XXX) XXX-XXXX
Landline
+1 (XXX) XXX-XXXX
Major city area codes
Sources
Confirms 009 + 1 + area code + local number format
Confirms 10-digit US number structure
Authoritative list of telephone country codes
DIALING RULES
These rules help you avoid failed calls and connection errors when dialing the United States from Nigeria.
From a Nigerian landline you must dial 009 before the US country code. On a mobile, pressing + replaces the exit code. Without this prefix your call will not leave Nigeria's domestic network.
A complete US phone number consists of a 3-digit area code plus a 7-digit local number. If you have fewer or more than 10 digits (after the +1), the number is incorrect or incomplete.
Unlike many countries, the United States uses the same 10-digit format for both mobile and landline numbers. There is no need to distinguish between the two when dialing.
US phone numbers do not use a trunk prefix (leading 0). If the number is stored with parentheses — e.g. (212) 555-0123 — simply ignore the parentheses and dial the digits directly after +1.
Some Nigerian mobile plans do not include international direct dialing by default. Check with your carrier (MTN, Airtel, Glo, 9mobile) or use a browser-based calling service like Sayfone that works over your data connection.
TIMING & TIPS
Nigeria runs on West Africa Time (WAT, UTC+1) year-round with no daylight saving changes. The US spans multiple time zones and observes daylight saving time from March to November. Plan your calls to land during reasonable hours on both ends.
Best for US East Coast
2:00 PM – 6:00 PM WAT
Reaches New York, Washington DC, Atlanta during 9 AM – 1 PM EDT
Best for US Central
3:00 PM – 7:00 PM WAT
Reaches Houston, Chicago, Dallas during 9 AM – 1 PM CDT
Best for US West Coast
5:00 PM – 9:00 PM WAT
Reaches Los Angeles, San Francisco during 9 AM – 1 PM PDT
Sources
Confirms 5–8 hour difference depending on US time zone
Confirms Nigeria WAT with no DST
TROUBLESHOOTING
If your call isn't connecting, one of these common issues is usually the cause. Most problems are easy to fix with a quick format check.
You likely forgot the exit code. From a landline, prepend 009 before the 1. On a mobile phone, make sure the number starts with +1, not just 1.
Double-check the area code and total digit count. A US number should be exactly 10 digits after the +1 country code. An incorrect or outdated area code is a common cause.
If you're calling over a cellular network, congestion can affect quality. Switch to a Wi-Fi connection and use a browser-based calling service like Sayfone for a more stable route.
Some Nigerian prepaid SIM plans do not enable international dialing by default. Contact your carrier to activate international calling, or use Sayfone through your browser — it only needs a data or Wi-Fi connection.
Standard carrier rates from Nigeria to the US can be expensive. Sayfone offers calls to the United States at $0.08/min with transparent per-minute billing — no hidden fees or subscriptions.
Sources
Lists frequent mistakes when calling the US
Savings
Adjust the tools below to compare Sayfone with typical retail pricing for calls to United States. Start with one call, then layer on monthly volume to see the bigger picture.
How to use these tools
Set duration and country. See Sayfone vs. an illustrative retail rate for the same call.
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220
min / month
~$3.92/min
~$2.96/min
~$1.76/min
~$0.40/min
$0.080/min
Annual saving vs. AT&T
Based on 220 min/month
Before you go
Open the full Nigeria to United States guide, check rates, or browse other how-to guides from Nigeria.
Nigeria to United States calling guide
Per-minute rates, savings calculator, and what to expect on this route.
What it costs to call United States
See Sayfone’s per-minute rate for United States and how it compares before you dial.
Route guides from Nigeria
FAQ
Quick answers to the most common questions Nigerians have about calling US phone numbers.
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