We are here to help you get answers to your questions about OneSimCard phones and services.
Is there a 911 emergency number in Europe that can be used with OneSimCard service?
Yes, in Europe the emergency number is 112. You can use 112 in Europe to report real emergencies to local authorities in the country of stay. The 3 digit number should be dialed directly without any additional digits in front of the number.
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For DataMax and DataMax eSIM SIM cards, while there is no voice calling feature without the use of 1SIM VoIP, which doesn’t support emergency calling, most cell phones ALWAYS allow you to call emergency numbers, even without a SIM inserted into the phone. In Europe the emergency number is 112. You can use 112 in Europe to report real emergencies to local authorities in the country of stay. The 3 digit number should be dialed directly using the regular phone app (NOT the OneSim VoIP App) without any additional digits in front of the number.
What is required to use the OneSim VoIP mobile application?
OneSimCard VoIP requires you to order a compatible Personal Extra Number (PEN). Most of the PENs we offer are OneSim VoIP enabled. You also need to have an Android phone with software version 8 or higher, or Apple device (iPhone, iPad, iPod Touch) with iOS 6.1 or higher.
Once you have an active OneSim VoIP enabled PEN, you will be able to see the option to create a OneSim VoIP account in the My SIM Cards menu of your online account. NB: YOU MUST create the 1SIM VoIP account in your account online on the "My SIM Cards" menu. Simply purchasing a PEN and downloading the mobile app DOES NOT create the VoIP account.
How to estimate the amount of internet data usage on my device?
General estimates for the amount of data used per service |
||
Activity |
Data Usage |
Services |
|
||
1 text only email with no attachment |
15KB |
6820 |
1 with attachment (attachments can vary greatly in size) |
300KB |
340 |
Web Browsing |
||
1 static page visit |
300KB |
340 |
The estimate is just for viewing the page without |
 |
 |
Social Media |
||
1 social media post with photo |
350KB |
290 |
1 Instagram picture upload |
150KB |
680 |
1 WhatsApp text message |
5.5 KB |
18610 |
Uploading and viewing pictures, playing videos, |
 |
 |
Music |
||
1 min of streaming music |
500KBÂ (30MB/hour) |
200 |
Downloading a 3-min song |
3.7MB |
25 |
Video |
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1 min of streaming video (standard) |
4MBÂ (240MB/hour) |
25 |
1 min of streaming video (HD) |
15MBÂ (900MB/hour) |
6 |
Note:Â Data usage varies by device. The above examples are estimates only. The actual amount of data used for the described activity can vary.
Standard definition (SD) video streaming rate: 533KBPS
High Definition (HD) video streaming rate: 2000KBPS
1MB = 1,024KB
1GB = 1,024MB
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.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:
Does OneSimCard offer a U.S. Military discount?
Yes! We offer a 15% discount (excluding airtime) for U.S. Military members when ordering with a verified .mil email address and entering promo code MILITARY15. This discount is only applicable for individual users, not for Corporate Accounts.How do I know if the Personal Extra Number (PEN) I currently have is OneSim VoIP compatible?
Log in to your OneSimCard account, go to the My Sim Cards menu and scroll down. If your PEN is VoIP compatible you will see an option to create a OneSim VoIP account. At this time all OneSimCard PENs are SIM VOIP capable except for UK Mobile numbers.Can I pay with PayPal?
No. We no longer accept PayPal for individual accounts. PayPal is still available for payment on Corporate accounts though.How do I make a call within the country I am currently located?
Is there any additional cost to create a OneSim VoIP account?
There is no additional cost except for the fact that you need to have a compatible Personal Extra Number (PEN) active on your SIM card.© 2006-2025 Belmont Telecom Inc., DBA OneSimCard.com. All rights reserved