We are here to help you get answers to your questions about OneSimCard phones and services.
How to activate and set up the mobile data service on your mobile device or tablet?
When I send an SMS text message I am sometimes charged for multiple outgoing text messages, what's wrong?
This means that your SMS text message has been split up into multiple messages because it contains too many characters.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.
How can I add airtime to my OneSimCard service?
In order to add airtime instantly, simply register a credit card with us on our website.
There are several ways to add airtime to your OneSimCard service.
Automatic Recharge - recommended:
From the phone using your credit card (Universal, Expedition and eSIM World only):
 For example, if you need to add $50 and the last 4 digits of the credit card registered with us 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
From the phone using 1SIM Fund:
 a) From the phone dialpad dial 098YYYY*XX. Talk. YYYY -  4 digits PIN you created in 1SIM FUND menu. YY Amount from 25 to 99 USD
 For example, if you need to add $50 and the 1SIM FUND 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
From the OneSimCard.com web interface:
If you purchased a recharge PIN from OneSimCard Authorized dealer, you can recharge your account from OneSimCard handset from OneSimCard - Add Credit menu. When the Add Credit menu is selected, enter the 10-digit PIN and press the Talk (Send) button.Â
How many times can I install an eSIM, and can it be installed on different devices?
For DataMax eSIMÂ can be installed once.Where can I find the settings required to be entered into the OneSim VoIP app?
Once you create the OneSim VoIP account, you will be emailed settings and instructions. You can also see the settings in the My SIM Cards menu of your online account.Is there an eSIM App for Apple iOS and Android devices?
Yes. The 1Sim eSIM app is available at:Can I move balances from one SIM card to another?
We allow moving balances from one SIM card to another in the following cases:
How do I top up my data with eSIM?
There are two ways you can do this:
Simply go onto your web account or eSIM app and purchase a new data package appropriate to your travel needs.
Can I pay with PayPal?
No. We no longer accept PayPal for individual accounts. PayPal is still available for payment on Corporate accounts though.© 2006-2024 Belmont Telecom Inc., DBA OneSimCard.com. All rights reserved