I feel like a bit of an idiot asking this, but is there a general rule of thumb on how to dial from a foreign cell phone when traveling internationally? Or does it vary by country?

As an example, I'm from the US and have a US-based cell phone.

I truly can't recall the last time I made a phone call while out of the country even though I travel internationally a half dozen times a year.

I usually program into my contacts the local US consulates/embassies but am curious if I'm entering the number correctly.

As an example, if I'm in London, do I dial the number for the US embassy in the same fashion as if I were dialing from a landline in London? Or, the same as if I had a UK-based cellphone? Or as if I'm dialing from the US?

I usually program in the "+" and country code. However, sometimes the dialing guides say that you don't need an extra "0" or some other such number if dialing from within the country.

All of this confuses me greatly and I'd like to know before I ever actually have to make an urgent call.

Let's this over to the Travel Technology forum for the experts there to chime in. /JY1024, TravelBuzz co-moderator

I can't speak for all American carriers, but at least for a US domiciled Verizon cell, calling the American embassy in London would be dialed as:
+44 207 499 9000. If you saw a number listed with "(0)" in front of the 207, at least in the UK example, it is likely for domestic calling from UK lines only.

In some countries there may be an extra zero in a phone number, and particularly when the phone is a cell. If I see a zero in front of a city code, I drop it. In the embassy example above, a zero before "207" would be removed. Note that large cities may have numerous different city codes, and oddly structure city codes dedicated to cell phone numbers. No difference than the fact there are probably ten area codes within 40 miles of your LA Basin house.

Now if I was in London and wanted to call the US embassy in Ankara Turkey, I would use same logic. I would dial +90 312 455 5555. The "90" is the Turkish country code, and the "312" is the city code for Ankara

It's worth doing a bit of exploring based upon your likely use scenarios before you leave, about dialing rules in a country, and familiarize yourself with a country's city code structure (akin to US area codes). Try this to start: https://www.howtocallabroad.com/ .

Remember, your US based cell phone is behaving not like a phone based in the country you are visiting. Hence "+1" in front is going to be needed.


P.S. Someone else will have to comment if any of the US cell carriers would require "011" in front of the "1". Personally haven't seen that in ages, when using a cell phone for a call initiation.

Thank you for the explanation. So, basically, it sounds like my phone will be recognized as if I'm dialing from abroad?

In that event, it seems as if I should be dropping, as you suggest, the leading "0" that sometimes the guides say are only relevant when dialing from a local phone.

Complete instructions
https://www.ricksteves.com/travel-ti...call-uk-europe
/edited to add reminder/
If you haven't taken the service you now carry overseas, check with your carrier before you go. Different plans range from free data/text/20 cents per minute voice to totally unaffordable. If your plan is more expensive than you want, consider purchasing a SIM (local phone number with a rechargeable data allotment) when you get to your destination. Make sure your phone's unlocked to do that.

Good point about looking at your current service providers offerings before you leave. However, I don't agree with the dialing instructions Rick Steve's site offers. It is too definitive, and YMMV greatly, depending on your provider.

it is never a problem to use the +COUNTRYCODE prefix, neither for domestic nor for international calls. And in almost all cases dropping the leading zero (which should indicated a domestic call) should be dropped.

Anyway, I have experienced in recent time that the phone carriers get better at routing calls. E.g. Lats week in Sweden I called a Swedish cell from my German cell phone and forgot to put the +46. Call connected without problems...

All the numbers programmed into my phone use the + prefix. This means I never have an issue wherever I am.

Same here. The best solution.

Good advice, thank you!

For me, that method worked everywhere I have travelled since signing up for Verizon's TravelPass except for Mexico. There, I had to dial local numbers just like locals do, otherwise I got a recording which I didn't understand.

I discovered that by trial an error after many failed attempts and long conversations with Verizon's Global Support who insisted that I have to dial +, country code, area/city code and the local number, despite that method not working. I had no issue whatsoever calling US numbers, though.