FREQUENTLY ASKED QUESTIONS

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101. How To Use Questions

    • How do I make a call within the country I am currently located?

      You should make any call the same way as if you were making an international call.

      For example, you are in France and need to call Paris:
      You should dial 00331XXXXXXXX. Please note that you should not dial 01 for Paris, but rather just 1 after country code 33, because Paris' code is 1.

      Dialing 0 in front of 1 is required when making a regular long distance call within France to Paris. However, when making an international call or OneSimCard call, 0 is omitted.

      For example, if you are located in Italy and need to call Rome:
      You should dial 003906XXXXXXXX, as Rome's code is 06.

      Get more information about international dialing codes.
       
      If you are unsure about how to properly dial an international number, you can Click here for more detailed country by country dialing instructions.
102. Ordering Questions

    • How many times can I install an eSIM, and can it be installed on different devices?

      For DataMax eSIM can be installed once.
      For eSIM World purchased after Jan 1st, 2024, after the initial installation, the eSIM can be reinstalled up to 9 times. This eSIM can NOT be installed in any other device. This eSIM can only be reinstalled in the original device. In no circumstances can the eSIM be installed more than 10 times (the initial installation plus 9 subsequent installations).
      For eSIM Asiania this eSIM can only be installed 1 time. It cannot be reinstalled after the initial installation.
      In no circumstances can the eSIM be installed more than 4 times (the initial installation plus 3 subsequent installations).
103. How To Use Questions

    • Do I need to change any settings on my phone when going abroad?

      Not Really. If you are planning to use Mobile Data, you will need to enable Data Roaming on your phone. Everything else in modern phones get done automatically. However, you should ensure that the APN on the device is correctly updated when the SIM card or eSIM card is enabled.
       
       
      Here is a video showing how easy it is to enable roaming:
      Here is a video showing how easy it is to check and add an APN:
      Android (APN demonstrated is for DataMax SIMs): https://youtu.be/j8fcJUpBj6k


      Universal, Expedition, & eSIM World SIM card types:

      Name: 1SIM

      APN: send.ee

      Leave all other settings alone

      DataMax, DataMax eSIM, & IoT Track SIM card types

                      Name: 1SIM (NOTE: Most IoT devices do NOT have a setting/field for “Name”)

                      APN : OSC (NOTE: The “O” is the LETTER O, NOT the number 0)

                      Leave all other settings alone
104. OneSim VoIP

    • Why can't I receive phone calls and SMS on my Android phone when the screen is off?

      Newer Android OS versions have settings that do not allow apps to run in the background by default. This means that you will get an SMS or a phone call only while your phone display is ON. Once the  phone goes to sleep, the app will get deactivated.

      To fix this, you need to make a change in your phone's battery optimization settings:

      Settings -> Apps and notifications -> See All Apps -> 1SimVoIP -> Advanced -> Battery -> Don't Optimize

      The settings path may slightly differ depending on the phone model, but usually it is located in the  App's Battery menu.
105. Troubleshooting Questions

    • How do I enable roaming on my Android Phone?

      This is very simple! 
      1. Go into your "Settings" app, and choose "Connections"
      2. Click on "Mobile Networks"
      3. Toggle on "International Data Roaming"
      We also created a short video here: https://youtu.be/zFu3FLFfdmo to demostrate this.
106. M2M SIM Cards

    • Are there any data packages available for M2M SIM cards?

      M2M SIM cards provide billing of data in 1 kb increments. In addition, small M2M data packages are available in the following countries: Albania, Armenia, Austria, Azerbaijan, Belarus, Belgium, Bulgaria, Canada, Croatia, Cyprus, Czech Republic, Denmark, Egypt, Estonia, Finland, France, Georgia, Germany, Greece, Hungary, Iceland, India, Indonesia, Ireland, Israel, Italy, Kazakhstan, Latvia, Liechtenstein, Lithuania, Luxemburg, Malta, Mexico, Montenegro, Netherlands, Norway, Philippines, Poland, Portugal, Romania, Russia, Saudi Arabia, South Africa, South Korea, San Marino, Serbia, Slovakia, Slovenia, Spain, Sweden, Tajikistan, Thailand, Turkey, UK, Ukraine, USA, Uzbekistan, United Arab Emirates.

      You can view data package sizes and cost here.

       Once activated, M2M packages will run monthly until they are either cancelled by admin or there is no further data usage on the SIM. Only one M2M package can be purchased during the package time period. If the data allowance of the package is consumed before the package expiration date, billing will be switched to per kb  until the next 30 day package gets automatically activated at the end of the previous package time period. The new data package will not automatically activate if there is no data usage on the SIM at the time when the activation should occur. Once data usage restarts the new data package will be automatically activated.
107. M2M SIM Cards

    • What services are provided on M2M SIM Card?

      OneSimCard M2M SIM Card offers Internet Data and SMS Service. Voice is not available. If you require Voice, please consider buying Expedition or Universal SIM at www.OneSimCard.com
108. M2M SIM Cards

    • What network coverage is offered on M2M SIM Card?

      OneSimCard M2M SIM works on major networks of the countries where it is being used.

      For example in USA the service is offered on AT&T, & T-Mobile networks. In Canada the service is offered on Rogers, Telus or Bell Canada. The switching between networks is automatic. The networks with the strongest signal will be selected to provide the best quality of service.

      You can view networks offered in each country on the M2M Rates and Coverage page.
109. M2M SIM Cards

    • What is the expiration rule for OneSimCard M2M SIM card

      It depends on the type of account you have. For prepaid accounts the M2M OneSimCard will expire 60 days after the date when there is no balance on the SIM. Once the SIM card expires, it can't be reactivated. Different rules are applied to the Pooled accounts.
110. M2M SIM Cards

    • Will I be able to see the usage details for my M2M SIM card?

      Yes, all usage details and charges are available in the My SIM Card menu of the customer account.

      In addition, you can filter SIM cards using the following parameters:

      • SIM cards with Data Package to be activated when the traffic starts moving
        • This option allows you to view those SIM cards where data packages have been set up for activation and will be triggered automatically once data is moving on the SIM.

      • SIM cards with data packages scheduled to get activated later
        • This option displays SIM cards with data packages scheduled to be activated on a particular date.

      • SIM with the balance below X
        • This option displays SIM cards with low balances that might need your attention to ensure service is not interrupted due to lack of funds.

      • SIM cards with the data usage over the last X DAYS above Y MB
        • This option displays SIM cards with the data usage exceeding your projected usage or could be used for other usage monitoring applications.

      • SIM Cards with the $ spending – Top X % in 30 days
        • This option displays SIM cards that are consuming the most funds for data and SMS usage.

      • SIM cards that reached monthly additions limit
        • If monthly spending limits for SIM cards are set, this option allows you to view SIM cards that already reached the monthly limit and are temporarily not in service until additional funds are added.

      • SIM cards 10% below monthly additions limit
        • This option allows you to view the range of SIM cards that are about to reach the monthly limit (If you have set limits on the SIM cards.)

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