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101. Troubleshooting Questions
    • I can't send SMS from my iPhone

      There is a known bug with iPhone phone book. If you are trying to text to a contact that is entered in the phone book, and the contact is not entered in proper international number format, the SMS will not go through even if you just enter the number in the SMS menu directly and properly. 
      Please edit the record in the phone book to be +CountryCode_Number. It needs to have the + character in front, which is an equivalent of 00.

      You will also need to delete all recent attempts to send SMS to this number from the Messaging menu. It should be no conversation or attempts to send SMS left in the phone to this number.


      We understand that this is very frustrating, but do not know why Apple will not fix it. This problem affects only Apple phones.

      Example: for US Number 1-617-600-8250 you should have entered in the address book: +16176008250
      Delete existing text conversation after fixing the phone book record. 
      You can always test your SMS by sending SMS to OneSimCard Support number +16176008250 from your OneSimCard phone. This will create an automated ticket in the system and you will know if the message was delivered or not. You will be charged regular SMS rate for this message.
102. Rates and Cost Questions
    • Is there a way to send a SMS to a short code number?

      Having an EU phone number, the SIM card does not offer SMS service to short code numbers

      However, OneSimCard offers special US Mobile Numbers working with the SIM or even without SIM which are capable of receiving SMS from Short Codes, like those sent by Banks, Paypal and other institutions as well as replying to short codes SMS using 1SIM VOIP app.
103. Rates and Cost Questions
    • Are there any discount SMS text message plans available in Europe or other countries?

      Discount SMS from Europe and many other countries are available with OneSimCard Universal, OneSimCard Plus, Expedition (formerly Data & Roam) and Europe & More SIM cards.

      Discount SMS 100 Plan

      When activated, this plan provides 100 free classic SMS messages sent from Europe to any number in any country in the world. Messages should be sent from the normal SMS menu of your phone and NOT from the OneSimCard 'Travel SMS' menu. SMS plan will be effective for 30 calendar days after the activation took place. The plan can be activated from your OneSimCard web account. Activation cost is 10.00 USD.  

      New SMS plans are available in following countries:
      Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, French Guiana, Germany, Gibraltar, Greece, Guadeloupe, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Martinique, Monaco, Netherlands, Norway, Poland, Portugal, Romania, San Marino, Slovakia, Slovenia, Spain, Sweden, United Kingdom and Vatican City.

      To check how many days and SMS messages are left, dial *146*922*1#
      Screen will show the following message: "SMS package active for X day(s) more, You have already used X of XX free SMS"

104. OneSimCard Rentals
    • How does the global cell phone rental program work?

      It's actually quite simple to rent a OneSimCard international cell phone phone bundle to use during your travels. Just tell us the date you need the phone and we'll ship a complete package directly to your door. Your package will include a mobile phone programmed with an international phone number, extra battery, charger, international travel plug adapter, holster, OneSimCard User Guide, $5 worth of initial airtime, and a US Mail return envelope. When you return from your trip, simply return the package in the envelope provided - just add postage.

      Update: As of March 5, 2018, all rentals come with a prepaid USPS Priority Mail return label. Simply attach it to the provided return envelope with your rentals inside and drop it off at the nearest post office. It’s that easy!

      When you tell us the country of your travel, we will select the SIM card type for you that offers the lowest calling rates in this country.

105. OneSimCard Rentals
    • How do I purchase additional airtime?

      The phone will come with $5 of initial airtime. There are three ways to purchase additional airtime.
      1. You can buy the airtime on-line by logging into your account at www.onesimcard.com. Your account will be created automatically when we ship you the phone.
      2. You can set up an auto-recharge which will automatically add value to your existing balance once it goes below a predetermined balance.
      3. You can use your Global Mobile Phone, by submitting a recharge order from the handset. Your credit card on file will be charged and the airtime will be added instantly.
106. OneSimCard Rentals
    • When do you consider the rental package as having been returned?

      You should ship the package back to us through the US Postal service using the label and envelope that came in your original package. 

      As of March 5, 2018, all rentals come with a prepaid USPS Priority Mail return label. Simply attach it to the provided return envelope with your rentals inside and drop it off at the nearest post office. It’s that easy!

      The post office will scan the label. The date the package is scanned is considered the rental's return date. Thus you will not be charged rental fees for the days after the package is scanned to be shipped back to OneSimCard.
107. OneSimCard Rentals
    • What if I return the Rental Package, but some of the items are missing or damaged?

      You will be charged for missing or damaged items in the package. The cost of the replacement items is provided in the packing slip of the rental package.

      To avoid paying replacement costs, consider purchasing a rental insurance. View full terms and conditions here.
108. OneSimCard Rentals
    • How can I set up the Personal Extra Number (PEN) on my rental order?

      Once your order is processed and shipped, you will receive a notification email. At this point, you can log in to your account and:
      1. Activate your SIM card(s) (you should wait to activate until after you receive the package)
      2. Once the SIM is activated, you can set up the PEN. You will see the link on the screen in the Recharge Menu. The PEN activation is done instantly. 

      If you activate the Free US PEN and your travel is under 30 days, it will stay active for the duration of your travel. If you will be traveling for more than 30 days and require the use of the PEN beyond 30 days, you must renew your PEN for a fee before it expires.

      Alternatively, you can order a PEN in your local area or in another country if you require one. 

109. Rates and Cost Questions
    • I was charged a large amount for mobile data service even though I barely used data, what happened?

      Each mobile data session is charged for a minimum of 10kB usage. Even if you check just one 3k email you will be charged for 10kB of usage. In some countries this can be over 30c per session, however in Europe and elsewhere it can be as little as 1c. Check all rates.

      Please note: Some phones, like iPhones and other smartphones, can access data without you even knowing it if you have data enabled. We strongly recommend checking the settings on your phone or disabling GPRS from your OneSimCard account if you will not be needing data service. By default, all SIM cards are pre-programmed with GPRS data service disabled.

110. OneSim VoIP
    • Why can't I receive phone calls and SMS on my Android phone when the screen is off?

      Newer Android OS versions have settings that do not allow apps to run in the background by default. This means that you will get an SMS or a phone call only while your phone display is ON. Once the  phone goes to sleep, the app will get deactivated.

      To fix this, you need to make a change in your phone's battery optimization settings:

      Settings -> Apps and notifications -> See All Apps -> 1SimVoIP -> Advanced -> Battery -> Don't Optimize

      The settings path may slightly differ depending on the phone model, but usually it is located in the  App's Battery menu.

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