FREQUENTLY ASKED QUESTIONS
We are here to help you get answers to your questions about OneSimCard phones and services.
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Can I use Facetime, WhatsApp, Telegram, Discord, iMessage, and other messaging Apps with eSIM?
Yes, you can use your messaging apps with
eSIM World, which now offers a mobile number ID.Â
For DataMax eSIM, you can use these Apps as you already do. Please ensure your messaging account is already setup with your primary carrier’s phone number because you cannot sign up for these services with the DataMax eSIM number.
Additionally, the eSIM data service can be used for the actual data part of your communications. So, when you are installing eSIM on phone, 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.
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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.
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What kind of payments do you accept?
We accept Visa, MasterCard, Discover, American Express and Bitcoin.
U.S. corporations can pay with company checks, ACH or wire transfer. No order will be processed until funds are cleared
For international customers with credit cards issued outside of the U.S. we require the order to be verified using the OneSimCard verification procedure. We do accept credit cards from most foreign countries.
Attention:Â Customers from the following countries must use Bitcoin option only (we will not accept credit cards as a form of payment): Congo, Egypt, Ghana, Lebanon, Nigeria, Pakistan, Palestine and Syria.
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To make it simpler, you can deposit money into your OneSimCard Money Fund and then use the funds to make all purchases at OneSimCard.com including airtime recharges.
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Can I Pay with BitCoins?
Yes, You can pay with Bitcoins.
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When paying with Bitcoins you first deposit money into your 1SIM Money Fund. Once the money is there, you can make a purchase or set an automatic recharge of you SIM card(s) or Extra Number(s).
Follow these steps:
- Go to www.onesimcard.com and if not registered yet, register by clicking on the Register link in the upper right corner of the screen.
- Once registered, log in to your account at www.onesimcard.com and proceed to 1SIM FUND menu.
- Select amount you would like to add to your OneSimCard fund.
- Click on BITCOIN button. You will be provided with few options for sending bitcoins.
- Follow the instructions on the screen.
- Once paid and funds are received by OneSimCard, you will be notified by email. While it usually takes no more than 2 hour for the payment to be posted to your 1SIM FUND, it could take up to 24 hours. Once you receive the confirmation email, you can log in to your OneSimCard.com account and make a purchase or recharge using the balance of your 1SIM FUND.
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How do I recharge using 1SIM Fund?
First you need to make sure you have funds in your 1SIM Money Fund.
You can do this by going to your 1SIM Fund menu and adding money from your, Visa Cards enrolled in Verified By Visa program, MasterCard enrolled in the Secure Code program or Bitcoin.
Once you have money in your fund, then you can add funds to the phone service by one of the following methods:
To recharge from your onesimcard.com portal:
- Go to Recharge Menu and recharge your SIM
or
- Set up auto-recharge in Recharge Settings Menu
To recharge from the phone using 1SIM Fund:
Before being able to add money using 1SIM Fund from the phone, you need to log in to your onesimcard.com portal and create a PIN in 1SIM FUND menu.
To recharge from the phone with Universal, Expedition, or eSIM World SIM Cards:
- From the OneSimCard menu of your phone, scroll down to Add Credit and select this option.
You will see 'Please enter PIN' on the screen.
Enter 4 digit 1SIM Fund PIN + * + Amount + press the OK.
For example, if you need to add $50 and the PIN is 8654:
You would dial 8654*50 and press OK. In few seconds you will get a confirmation message with your new balance.
- Alternatively you can do the same from the main dial menu of the phone by dialing: 098+PIN+*+Amount+ Talk (Send) button.
For example, if you need to add $50 and the PIN is 8654:
You would dial 0988654*50 and press TALK. In few seconds you will get a confirmation message with your new balance.
      * is a star character located on the keypad
Money will be deducted from your 1SIM Fund balance.
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How to activate and set up the mobile data service on your mobile device or tablet?
1. Log in to your account at
www.onesimcard.com using the email address and password you entered during the activation or registration of the SIM.
2. To enable data, go to your My SIM Cards menu, select your SIM card, scroll down to Internet Data and click ‘Enable’.
2a. For DataMax SIM cards, you can disable Pay-As-You-Go (PAYG)/Per MB data on your online account in the "My SIM Cards" menu. You will see " in the "Select SIM Card" section an area labeled "Use w/o Plan:" to disable per MB data use, this should be turned off. It is recommended to use data plans whenever/wherever available.
3. Turn on Data Roaming on your phone.
This is all that is needed for mobile data to work.
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Can I check my Voice Mail from a phone other than my OneSimCard phone?
Yes. You can access the Voice Mail from other phones.
First you need to set up a voicemail password by either calling from your OneSimCard phone or logging in to your account and clicking on the Voicemail link.
Once the password is set up, you can dial voice mail access number:
Toll Free access number for customers in the U.S. or Canada to retrieve voicemail for free: 1-866-703-4770
Local U.S. number for worldwide customers to retrieve voicemail: 1-213-805-2905
New Online Voicemail Feature: You can now listen to voicemail for free by logging in to your account and clicking on the Voicemail link. There, you can also set voicemail to be emailed to you as an audio file and change passwords and other settings.
IMPORTANT NOTE: Voicemail messages will be automatically purged from your inbox after one month, so please be sure to save the content of any important messages before they are deleted.
This does not apply to DataMax SIM cards
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How do I check my OneSimCard balance?
For Universal, Expedition, & eSIM World ONLY: Just dial 099 "Send" from your OneSimCard phone and in few minutes the balance will be displayed on the screen of your phone. Customers with iPhones can use OneSimCard Assist app to check balances and many other things.
You can always check your current balance by logging onto your OneSimCard account at www.onesimcard.com.
