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1. Rates and Cost Questions
    • Can I keep receiving calls made to my regular cell phone or landline numbers while traveling abroad?

      Yes, you can easily forward calls from your regular cell phone number, home phone, office, etc. to your OneSimCard phone while you're abroad!

      Your OneSimCard international Universal and Expedition SIM card comes with both a European and U.S. number. To forward your regular U.S. numbers to the SIM, just set them to forward to the U.S. number that's included with your SIM card. For eSIM World and DataMax eSIM, you can order Personal Extra Numbers (PENs) as needed for an additional cost.

      You can also order unlimited Personal Extra Numbers (PEN) - Local or Toll Free - in many different countries, including USA, Canada, UK, France, Italy and Spain. For example, if you work or live in the UK and want to keep receiving calls made to your regular UK numbers, just add a UK PEN to your SIM card and set up call forwarding to that new number.

      Calls received through a PEN will be charged an additional 20c/min to the incoming rate of the country you are in. The exception is calls received through a UK-Mobile PEN which is only charged an additional 25c per call.

      Please Note: Your subscription to a Personal Extra Number starts the moment your order is shipped. If you do not need your PEN to be active right away, you can always wait and order a PEN later at any time by logging in to your account.

      You can forward your calls to your 1SIM VoIP PEN. Simply forward all calls from your phone number to your 1SIM VoIP PEN using the directions below. Normal charges will apply for receiving calls to your 1SIM VoIP number (there will be NO extra $0.20, or $0.25 for UK PEN, cost to receive a call on OneSim VoIP).

      Different carriers use different ways of programming call forwarding. Below are instructions to setup call forwarding with various US wireless carriers. We urge you to test the call forwarding a few days prior to your trip, and to call your wireless carrier for assistance if needed.

      Alltel, , Verizon Wireless, Cricket Wireless

      To activate Call Forwarding:

      1. Press *72 on your cellular phone.
      2. Enter your ten-digit Second Personal OneSimCard phone number (area code + telephone number).
      3. Press OK/Send (a tone will confirm that Call Forwarding is active).

      * is a star character located on the keypad

      To deactivate Call Forwarding:

      1. Enter *720 on your cellular phone.
      2. Press OK/Send (a tone will confirm the deactivation).

      T-Mobile and AT&T Wireless GSM phones

      To activate Call Forwarding:

      1. Press *21* on your cellular phone.
      2. Enter your ten-digit Second Personal OneSimCard phone number (area code + telephone number) followed by the # key.

      To deactivate Call Forwarding:

      1. Enter #21# on your cellular phone.
      2. Press OK/Send.

       

2. How To Use Questions
    • Can I forward calls from my OneSimCard phone to another number?

      Yes. Your Universal, Expedition and eSIM World OneSimCard mobile number can currently be forwarded to EU, Canada, USA, Russia, Ukraine and Belarus numbers. It's 100% free to forward your OneSimCard phone number to many countries including to U.S. or Canadian numbers. Forwarding to some countries, as well as to satellite phones, will carry a forwarding charge as listed in the Rates & Coverage page on OneSimCard.com.

      To enable/disable call forwarding from your online account:

      Log in at OneSimCard.com and go to the My SIM Cards menu. Select your SIM card number and enable/disable Call Forwarding on this screen.

      To enable/disable call forwarding from your phone:

      Dial *146*081*XXXXXXXXXXXXX# and press Send/Talk (where XXXXXXXXXXXXX is the forward-to number in international format: 00+countrycode+number)

      Newer SIM cards use *81* instead of *081*

      Example: to forward to U.S. number 1-617-555-1212, dial *146*081*0016175551212# and press Send/Talk.

      If you get an "Unknown Format?" message, dial *146*81*0016175551212#

      To disable call forwarding, dial *146*080# and press Send/Talk. If you get an "Unknown Format?" message dial *146*80# and press Send/Talk.

3. Ordering Questions
    • Can I transfer my phone numbers and balance from my standard OneSimCard SIM when I upgrade to a OneSimCard Plus SIM or other SIM card?

      • We can move your airtime balance and PEN if any from your standard SIM to the Universal, Expedition, eSIM World, DataMax, or DataMax eSIM SIM if you upgrade the SIM or your sim is lost or damaged and you are buying a replacement SIM. The replaced SIM will be permanently deleted from your account.. 
      • We can move your Personal Extra Number from your sim to any other SIM. There is $5 charge for this.
      • We cannot transfer your primary +372 number from your Standard SIM to any other SIM, you will get a new number when you upgrade. 
      • NOTE: DataMax and DataMax eSIMs do not come with any primary phone number. You can purchase a PEN to use voice and SMS with our OneSIM VoIP App
4. OneSim VoIP
    • Which phone number will be shown on the caller ID when I make a call using OneSim VoIP?

      Your active OneSim VoIP Personal Extra Number (PEN) will be shown on the caller ID.
5. Rates and Cost Questions
    • How much does it cost someone in the US or Canada to call to my OneSimCard cell phone?

      For Universal, Expedition, and eSIM World SIM cards, many U.S. and Canadian carriers can charge more than $3/minute to connect to an Estonian mobile number, the primary mobile number for a OneSimCard global SIM card. Your SIM card includes a U.S. number which will be much less expensive for people to call.

      Callers can also use one of the Common Access Numbers (CAN) that we provide to you free of charge in more than 10 countries. Your OneSimCard account will simply be charged an additional 20c/min to the incoming rate in the country you are in to receive those calls. There is also the option of ordering a dedicated Personal Extra Number (PEN) in Canada and many other countries that will forward all calls directly to your OneSimCard cell phone. You can see the list of countries where PENs are available here:

      You can order a Personal Extra Number when placing your order or later at any time by logging in to your account. Visit our Rates & Coverage page and choose any country to view all rates.

      If you would prefer for the caller to pay for calls made, we recommend they buy Peanuts Prepaid. Using this service would guarantee a connection to your OneSimCard mobile phone from the U.S and Canada for 20c/min and it is very easy to use without switching your LD carrier.

      For DataMax and DataMax eSIM, if you chose to use SIM VOIP app, your friends and family will call the PEN number you are assigned, so in most cases, there will be no tariff for them to call you, and the cost to receive the call is only $0.01/Minute.

6. Ordering Questions
    • Do international cell phones purchased from OneSimCard come with a warranty?

      Unless otherwise noted, all phones sold on OneSimCard.com come with our standard 90-day replacement warranty. This warranty covers any mechanical defects, but does not include damage due to Acts of God, neglect, water damage, or other intentional or unintentional abuses of the phone. OneSimCard does offer extended warranties available for purchase.

7. eSIM
    • Do you offer an eSIM option for iPhones, Androids or Tablets?

      Yes. The OneSimCard eSIM option is available for use with iOS and Android phones, smart watches and even Windows tablets.

      eSIM is not a physical SIM, but rather a program that can be downloaded to eSIM compatible phones and device.

      The list of supported devices includes:

      iOS:
      • iPhone 15 Pro Max
      • iPhone 15 Pro
      • iPhone 15 Plus
      • iPhone 15
      • iPhone 14 Pro Max
      • iPhone 14 Pro
      • iPhone 14 Plus
      • iPhone 14
      • iPhone 13 Pro Max
      • iPhone 13 Pro
      • iPhone 13 mini
      • iPhone 13
      • iPhone 12 Pro Max
      • iPhone 12 Pro
      • iPhone 12 mini
      • iPhone 12
      • iPhone 11 Pro Max
      • iPhone 11 Pro
      • iPhone 11
      • iPhone XS
      • iPhone XS Max
      • iPhone XR
      • iPhone SE 3 (2022)
      • iPhone SE 2 (2020)


      Apple iPad models with an eSIM:

      • iPad Pro 11" (1st Gen or later)
      • iPad Pro 12.9" (3rd Gen or later)
      • iPad Air (3rd Gen or later)
      • iPad (7th Gen or later)
      • iPad mini (5th Gen or later)

      Android:
      • Arrows A101 FC
      • Fairphone 4
      • Google Pixel Fold
      • Google Pixel 8 Pro
      • Google Pixel 8
      • Google Pixel 7a
      • Google Pixel 7 Pro
      • Google Pixel 7
      • Google Pixel 6 Pro
      • Google Pixel 6
      • Google Pixel 6a
      • Google Pixel 5
      • Google Pixel 4
      • Google Pixel 4a
      • Google Pixel 4 XL
      • Honor Magic 4 Pro
      • Honor Magic 5 Pro
      • Huawei P40
      • Huawei P40 Pro
      • Huawei Mate 40 Pro
      • Motorola RAZR 40 Ultra
      • Motorola EDGE 40 Pro
      • Motorola G53 5G
      • Motorola G52J 5G
      • Motorola G53J 5G
      • Nokia XR21
      • Nokia G60
      • Nokia X30
      • Nuu X5
      • Oppo Find X3
      • Oppo Find X3 Pro
      • Oppo Find X5
      • Oppo Find X5 Pro
      • Oppo Find N2 Flip
      • Oppo Reno 5 A
      • Oppo A55s
      • Oppo Reno6 Pro 5G
      • Rakuten Hand 5G
      • Rakuten Mini
      • Rakuten Big‑S
      • Rakuten Big
      • Samsung Galaxy A54 5G
      • Samsung Galaxy Fold
      • Samsung Galaxy Note20
      • Samsung Galaxy Note20 Ultra
      • Samsung Galaxy S23
      • Samsung Galaxy S23+
      • Samsung Galaxy S23 Ultra
      • Samsung Galaxy S22
      • Samsung Galaxy S22+
      • Samsung Galaxy S22 Ultra
      • Samsung Galaxy S21 5G
      • Samsung Galaxy S21+ 5G
      • Samsung Galaxy S21 Ultra 5G
      • Samsung Galaxy S20
      • Samsung Galaxy S20+
      • Samsung Galaxy S20 Ultra
      • Samsung Galaxy Z Flip
      • Samsung Galaxy Z Fold 2
      • Samsung Galaxy Z Fold 3 5G
      • Samsung Galaxy Z Fold 4
      • Samsung Galaxy Z Flip 3 5G Fold
      • Samsung Galaxy Z Flip 3 5G
      • Samsung Galaxy Z Flip 4
      • Samsung Galaxy Z Flip 5
      • Samsung Galaxy Z Fold 5
      • Sharp Aquos R8 Pro
      • Sharp Aquos Sense 7
      • Sharp Aquos Sense 4 lite
      • Sony Xperia 10 III Lite
      • Sony Xperia 1 IV
      • Sony Xperia 5 IV
      • Sony Xperia 10 IV
      • Sony Xperia 1 V
      • Sony Xperia 5 V
      • Sony Xperia 10 V
      • Xiaomi 12T Pro
      • Xiaomi 13
      • Xiaomi 13 Pro
      • Xiaomi 13 Lite

      Windows 10:
      Acer Swift 7, ASUS NovaGo, HP Envy x2, Lenovo IdeaPad Miix 630, Lenovo Yoga 630, Microsoft Surface Pro X/Go 2/Pro with LTE Advanced.

      Learn more about eSIM compatibility on the eSIM page.

       Note: iPhonesmanufactured for the Chinese Market have 2 physical SIM card slots and are not eSIM capable. Pixel 3a can't use eSIM if the phone was purchased in Japan, or if bought with Verizon or Charter service.
8. Troubleshooting Questions
    • I have an iPhone and am receiving charges for SMS sent to a UK mobile number 447786205094. Why?

      This is a known issue with Apple's Facetime and iMessage applications on Apple iPhone  devices. We recommend disabling Facetime and iMessage so it will not be able to automatically send SMS to this 447786205094 number. Any SMS sent to this number automatically by your phone can not be refunded by OneSimCard. Additional questions regarding iPhone applications and how they communicate should be directed to Apple Support.
      You can learn more on the Apple Support web site:
      https://discussions.apple.com/thread/5968824
9. How To Use Questions
    • Can I use a OneSimCard phone to send an SMS message?

      Of course you can! Simply send and receive SMS texts according to your phone's user manual or from the OneSimCard Menu. Receiving SMS is always free. Sending an SMS (text message) is $0.15 - $1.50 depending on the country.

      SMS messages sent to a OneSimCard phone should always be sent to the main OneSimCard mobile number rather than to an optional Extra Number, with the exception of new SMS enabled numbers in USA, Canada and UK Mobile available since Jun 3rd, 2014. When replying from OneSimCard phone to the SMS received on USA or Canada SMS capable PEN using Europe & More sim or the Expedition SIM, the main number of the SIM that starts with 372 will be displayed on the text receiver phone. With the Universal SIM, you can select what caller ID will be shown on the SMS receiving party phone.

      You can also send SMS messages from OneSim VOIP app at much lower rates.


      You can also send a free SMS message to any OneSimCard customer from our web site or by sending email to [email protected], where 372XXXXXXXX is the OneSimCard primary mobile phone number. The maximum number of daily SMS sent to the SIM over email or web is 25.

      Please bear in mind that message should be sent in English characters. In addition, it should not be longer than 160 characters including spaces.


      These 2 options of sending SMS by email provide completely free way of communicating, as it is usually free for you to send the email and costs nothing for the OneSimCard customer to receive a text message.

10. Rates and Cost Questions
    • How much does it cost to receive a call with OneSimCard?

      For Universal, Expedition, and eSIM World SIM cards, receiving calls is free in over 150 countries when received on your primary European phone number, including in most of Europe. To receive a call on your U.S. number or other Personal Extra Number, there is an additional per minute rate added. View all international cell phone rates.

      If you receive a call through a Common Access Number or Personal Extra Number (such as a U.S. number) there is an additional charge of 20c/min. In countries with free incoming calls this would be your only charge per call.

      For DataMax and DataMax eSIM card types, you can make and complete calls for a fraction of the cost of traditional cellular roaming (including on tablets) using the 1SIM VoIP App available on Google’s Play Store and Apple’s App Store:

       

      Google Play: https://play.google.com/store/apps/details?id=org.onesimvoip&hl=en_US&pcampaignid=pcampaignidMKT-Other-global-all-co-prtnr-py-PartBadge-Mar2515-1

       

      Apple App Store: http://itunes.apple.com/us/app/onesim-voip/id510371587

       

      For Universal, Expedition, and eSIM World SIM cards,  all incoming SMS text messages are free to receive when received on your primary European number. Add 9 cent per SMS when receiving text on US or Canada PEN.

      For DataMax and DataMax eSIM SMS messages are sent and received using the 1SIM VoIP App. The cost to receive SMS using the 1SIM VoIP App is $0.05 in most countries, The cost to send an SMS using 1SIM Voip App is $0.10 in most countries. See all rates on our international cell phone rates page.


       

       

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