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81. OneSimCard Rentals
    • What if I return the Rental Package, but some of the items are missing or damaged?

      You will be charged for missing or damaged items in the package. The cost of the replacement items is provided in the packing slip of the rental package.

      To avoid paying replacement costs, consider purchasing a rental insurance. View full terms and conditions here.
82. OneSim VoIP
    • When I make a call using OneSim VoIP the quality of the call is not as good as the quality of the regular roaming connection. Can this be improved?

      The quality of a OneSim VoIP call is only defined by the quality of your Wi-Fi connection. This is the part of the connection that we can not control. Quality of the Wi-Fi connection is defined by many parameters, rather than just by the speed of the connection. With a good Wi-Fi connection the quality of the call will be similar to using our regular roaming network.
83. OneSimCard Rentals
    • How can I set up the Personal Extra Number (PEN) on my rental order?

      Once your order is processed and shipped, you will receive a notification email. At this point, you can log in to your account and:
      1. Activate your SIM card(s) (you should wait to activate until after you receive the package)
      2. Once the SIM is activated, you can set up the PEN. You will see the link on the screen in the Recharge Menu. The PEN activation is done instantly. 

      If you activate the Free US PEN and your travel is under 30 days, it will stay active for the duration of your travel. If you will be traveling for more than 30 days and require the use of the PEN beyond 30 days, you must renew your PEN for a fee before it expires.

      Alternatively, you can order a PEN in your local area or in another country if you require one. 

84. eSIM
    • Can I use Facetime and iMessage with eSIM?

      Yes, you can use Facetime and iMessage with eSIM, which now offers a mobile number ID.


      Additionally, the eSIM data service can be used for the actual data part of your communications. So, when you are installing eSIM on iPhone, you can select the Primary service for Facetime and iMessage and then if your selected eSIM to be your primary data service, the communications will go over eSIM mobile data.
85. Troubleshooting Questions
    • I can't send SMS from my iPhone

      There is a known bug with iPhone phone book. If you are trying to text to a contact that is entered in the phone book, and the contact is not entered in proper international number format, the SMS will not go through even if you just enter the number in the SMS menu directly and properly. 
      Please edit the record in the phone book to be +CountryCode_Number. It needs to have the + character in front, which is an equivalent of 00.

      You will also need to delete all recent attempts to send SMS to this number from the Messaging menu. It should be no conversation or attemtps to send SMS left in the phone to this number.


      We understand that this is very frustating, but do not know why Apple will not fix it. This problem affects only Apple phones.

      Example: for US Number 1-617-826-9050 you should have entered in the address book: +16178269050
      Delete existing text conversation after fixing the phone book record. 
      You can always test your SMS by sending SMS to OneSimCard Support number +16178269050 from your OneSimCard phone. This will create an automated ticket in the system and you will know if the message was delivered or not. You will be charged regular SMS rate for this message.
86. OneSim VoIP
    • When making an outgoing call how do I select which way the call should go: through regular roaming or through OneSim VoIP?

      To make an outgoing call using OneSim VoIP, you need to be registered on a Wi-Fi network and have the OneSim VoIP app running on your phone. You should make the call using the OneSim VoIP app dial pad. To make a call the regular roaming way, you should make a call from your regular phone dial pad.
87. OneSimCard General Service 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 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.

      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.

      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 US wireless carrier for assistance if needed.

      Alltel, Sprint PCS, Verizon Wireless, Nextel, 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.

      Please note that Sprint and Nextel may charge an extra 20c/min on forwarded calls.

88. OneSim VoIP
    • I can make calls through OneSim VoIP. However incoming calls are going through my roaming SIM. What's wrong?

      If your incoming calls are not being routed through the OneSim VoIP app then you are either not connected to Wi-Fi or the OneSim VoIP app is not active.

      Please make sure to check your phone's sleep settings, as they are usually preset to have Wi-Fi turn off when the phone enters sleep mode. To prevent this and to keep OneSim VoIP active for incoming calls, find the settings in your phone and set it so Wi-Fi does not turn off when the phone enters sleep mode.

      Note: if the OneSim VoIP logo on the top of your phone display is gray then you will not be able to receive calls through the application. When the logo is yellow that means you are connected and can receive calls through OneSim VoIP.
89. eSIM
    • Do I need to have Data Roaming turned on for eSIM to work?

      Yes. Data Roaming should be turned on on your  phone for eSIM for data to work. Calls and texts should work with or without it.
90. OneSimCard General Service Questions
    • When my order will be shipped?

      Sim card and phone orders placed during business hours before 3 PM Eastern Time will be shipped on the same day the order was placed. Orders placed after 3 PM will be shipped the next business day. The only exceptions are phone that are out of stock. In this case you will be notified about delayed shipping during the purchase.
      Rental Orders will be shipped in such a way so you will received it 1 day before the Rental Start date you indicated on your order. For last minute rental orders, you will have to use express delivery options.

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