Can I install my OneSimCard eSIM more than once?
You can re-install the eSIM on the same phone up to 10 times. eSIM can be installed only on one device. Once installed, it's not possible move that eSIM to another device. If you need to install eSIM on another phone, please order a new eSIM. Balance and PEN(s) from the old eSIM can be moved to a new eSIM at your request.Can I use Facetime, WhatsApp, Telegram, Discord, iMessage, and other messaging Apps with eSIM?
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.
I have an iPhone and am receiving charges for SMS sent to a UK mobile number 447786205094. Why?
This is a known issue with Apple's Facetime and iMessage applications on Apple iPhone devices. We recommend disabling Facetime and iMessage so it will not be able to automatically send SMS to this 447786205094 number. Any SMS sent to this number automatically by your phone can not be refunded by OneSimCard. Additional questions regarding iPhone applications and how they communicate should be directed to Apple Support.Are there any discount call (voice) plans available for Europe or other countries?
Yes, discount calling plans are available on select sim cards.
"Discount A" Voice Calls Plan
You can subscribe to the Discount Call Plan A for Europe (see country list below) and Turkey for just $3.99! Subscription is good for 30 days and will not automatically renew. This plan is available on the Plus and Universal SIM cards.
Once the discount plan is activated, you will be able to make calls from the countries below for only $0.15/min starting with the second minute! The first minute will be charged at the regular outgoing call rate:
Aland Islands, Austria, Azores, Belgium, Bulgaria, Canary Islands, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Guernsey, Hungary, Iceland, Ireland, Isle of Man, Italy, Jersey, Latvia, Lithuania, Madeira, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Svalbard, Sweden, Turkey and United Kingdom.
For example, in Spain where our regular outgoing call rate is $0.49/min, a 15 minute call to the U.S. will now cost $2.74 instead of $7.35!
PLEASE NOTE: If you activate the discount A call plan, the special rate to make OneSimCard-to-OneSimCard calls and to call the voicemail system will not be available. Activation of this discount plan will also cancel the Discount B - Bucket of Minutes to USA, Canada, Australia and New Zealand. You will be charged for those calls according to the discount call plan rate. Discount rate not applicable for calls to Customer Support. Calling to some countries costs extra. Please consult our rates page for more details.
The discount voice subscription can be activated online by logging in to your account or by sending a command from your phone.
"Discount B" Voice Calls Plan
The Minute Buckets offer calling from 130 countries to United States, Canada, Australia and New Zealand at deeply discounted rates. These plans are available on the Standard, Plus and Universal SIM cards.
Available Discount B plans:
Discount B |
Duration |
Plan Size |
Cost |
Junior |
7 days |
200 Min |
|
Standard |
14 days |
400 Min |
|
Max |
30 days |
900 Min |
The Minute Bucket minutes will be usable in all countries where the package is available.
The following additional rules govern Minute Bucket purchases:
To see countries where the Minute Buckets apply, go to the Rates and Coverage page and select From and To Country and the Plus SIM type in the pull-down menu. Visit the Rates and Coverage page.
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Please note:
• It's not possible to purchase more than one voice plan at once
• If one of the voice plans is purchased, all other discount plans are automatically deactivated
• Calls from SIM to SIM and Voicemail are not included in this plan
Activation of the plan:
To order a voice plan, login to your OneSimCard web account, click on the My SIM Cards menu and navigate to the Discount Voice Plans section. Select the desired plan and click one of the Activate buttons. Follow the system prompts to finish the activation.Â
NOTE: There are no discount plans available on OneSIM VoIP. Because the cost of OneSIM VoIP is so deeply discounted, there are no packages available for voice on OneSIM VoIP.
How Do I Check The Balance Of Purchased Data Plan?
There are three ways to check the remaining balance of purchased data plan.
1. On-line in the Discount Section of the My SIM Cards menu of your web account or in the mini account at https://ma.onesimcard.com/Â
2. For eSIMs from the OneSim eSIM app
3. From OneSimCard mobile phone (for Universal, Expedition and eSIM World SIM cards only):Â
   Dial the following: *146*942#
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The remaining data balance will be displayed.
How do I recharge using 1SIM Fund?
How can I contact customer support?
There are a number of ways you can contact customer support.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.Â
NOTE: Regular roaming calling is NOT available on DataMax or DataMax eSIM cards. To use voice you will need to use the OneSim VoIP app
Does calling a mobile phone cost more than calling a landline?
It does not cost more to dial an international mobile number using OneSimCard service on traditional cellular connections. You will receive the same very low per minute rate whether calling to a mobile phone or to a land line.Â
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For OneSim VoIP, the cost of calling Mobile numbers is typically higher than calling landlines, but this method is still less than traditional voice calls in most countries..
You can find all rates listed on our Rates & Coverage page.
How does OneSimCard compare to the international roaming from the largest US carriers?
OneSimCard can help you save a lot of money on international roaming abroad over large domestic carriers. Check out these rate tables to compare international roaming offerings from AT&T, Verizon,  and T-Mobile.Â
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