SIM card: Samsung Gravity 3

Learn how to insert the SIM card or unlock the Samsung Gravity 3. Find out more on this page:


SIM card

SIM storage

Mobile Device Unlock



SIM card

Insert / remove SIM card

To insert or remove the SIM card, follow these steps:


  1. Lift the back cover  to remove it.


  1. Remove the battery by lifting it out  of the compartment.


  1. Turn the SIM card so that the gold  contacts face down and the notched end is closest to you. Slide the SIM card  into the SIM card holder.


  1. Insert the battery by aligning the  gold contacts on the battery with the gold contacts inside the phone. Lower the  battery into position.



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SIM storage

Delete SIM messages

We’re sorry, but this feature is not supported on your device.



View free SIM space

To view free space on the SIM card for contacts or messages, follow these steps:


  1. From the main screen, select Menu.
  2. Scroll to and select Settings.
  3. Scroll to and select Personalize.
  4. Scroll to and select Memory settings.
  5. Scroll to and select Memory status.
  6. Scroll to and select Contacts.
  7. Scroll to and select SIM card to view Phonebook memory on  the SIM card.



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Mobile Device Unlock

Mobile Device Unlock

The Mobile Device Unlock code allows the device to use a SIM card from another wireless carrier. This may be necessary when traveling internationally. To enter the Mobile Device Unlock code, follow these steps:


Important: Stop if you receive an error message. The device may lock permanently if you enter the incorrect code multiple times.


  1. See if your phone is eligible to unlock: Mobile Wireless Device Unlocking.
  2. Contact Customer Care to request the Mobile Device Unlock code for your phone.

Using a T-Mobile SIM card:

  1. Verify the IMEI by entering *#06#.
  2. Submit a new request.
  3. Instruct the customer to enter #7465625*638*Unlock Code#.


Using a Non T-Mobile SIM Card:

  1. Insert the non T-Mobile SIM card
  2. Power device on
  3. Once on the device will display, “Incorrect SIM, Network Lock”
  4. Enter the unlock code
  5. Press the OK Button
    Note: Phone will power cycle once unlocked



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