How do I check my OneSimCard balance?
How do I make a call using OneSimCard global cell phone service?
To make a call:How do I make a call within the country I am currently located?
How to activate and set up the mobile data service on your mobile device or tablet?
Can I check my Voice Mail from a phone other than my OneSimCard phone?
Yes. You can access the Voice Mail from other phones.How do I set up SMS text messaging on my phone?
SMS messaging usually works without any additional setup of the phone.
In rare cases when there are issues sending or receiving text messages, please look at the following:
Problem with Sending SMS:
SMSC number should be set as follows:
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1. For Standard  and Plus OneSimCard SIM: +3725099000 for all countries except:
a. China:  +85290296747
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2. For the Expedition (former Data & Roam) SIM as well as for Europe & More SIM: +37256100041
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Special instructions for Apple Phones:
With Apple iPhones to check SMSC:
From the phone dialer Dial *#5005*7672#Â
You will see the SMSC set currently on the phone.Â
To change the SMSC on Iphone dial:Â
Plus and Standard SIMs: **5005*7672*+3725099000# for all countries except China and **5005*7672*+85290296747# if in China.
Expedition (formerly Data & Roam) and Europe & More SIMs in any country:Â **5005*7672*+37256100041#
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If your phone requires the name of Message Center Name enter: SMSC
SMS lifetime is short - must be at least 2 hours or set to Maximum settings.
Try sending SMS from OneSimCard menu
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 Problem with Receiving SMS:
Is there an eSIM App for Apple iOS and Android devices?
Yes. The 1Sim eSIM app is available at:© 2006-2023 Belmont Telecom Inc., DBA OneSimCard.com. All rights reserved