How To Fix My Iphone 3gs No Service

By now you probably know all there is to know about your device, but if not, we've got you covered with some basic info below.

Device buttons and key features

Get a little refresher about the different buttons on your device as well as some of its key features.

Buttons

Icons

Key Features

3.5" Multi-touch display
ARM Cortex A8 Processor
3 MP Camera
3G Capable

User guide

Check out the attached PDF user guide to find basic step-by-step procedures for your device.

Back up and restore

Backup

From the Home screen, tap Settings.
Tap iCloud. iCloud requires a Wi-Fi data connection.
If prompted, sign in with your Apple ID.
Tap Contacts to switch the slider ON.
If prompted, select to Merge contacts with iCloud.
Tap Storage & Backup.
Tap iCloud Backup to switch the slider ON.
Tap iCloud.
Tap Photo Stream.
Tap My Photo Stream to turn the slide ON.

Restore

To restore your content, you must reload your device software and restore your iCloud backup.

Reset your device

A master reset restores the original factory settings and may delete your personal data on the internal storage, such as downloads, ringtones, images, apps, contacts, and Visual Voicemail. It doesn't delete data stored on the SIM card or SD card.

Master reset with settings menu

Back up all data on the internal memory.
From the Home screen, tap Settings.
Tap General.
Tap Reset.
Tap desired option:
- Reset All Settings
- Erase All Content and Settings Use this option for master reset.
- Reset Network Settings This will delete any saved Wi-Fi profiles.
- Reset Keyboard Dictionary
- Reset Home Screen Layout
- Reset Location Warnings
Confirm selection..

Memory and SIM cards

SIM card

This device supports a mini SIM card.

Insert the end of a small thin paper clip into the hole on the SIM tray.
Press firmly and push the paper clip straight in until the tray pops out.
Insert or remove the SIM card from the tray

Network settings

Change band

From any Home screen, tap Settings > General > Cellular.
Drag the Enable 3G slider to OFF.

Manual network selection

From the Home screen, tap Settings > Carrier.
If the Carrier option does not appear with a T-Mobile SIM card in the device, it may indicate the device was not correctly unlocked or jailbroken.
Slide the Automatic slider to the Off position to start scanning for networks.
Select desired carrier.
Tap Settings.
Press the Home button.

Turn on/off data roaming

From any Home screen, tap Settings > General > Cellular.
Drag the Data Roaming slider to OFF.

Turn on/off mobile data

From any Home screen, tap Settings > General > Cellular.
Drag the Cellular Data slider to ON or OFF.

Turn on and connect to Wi-Fi

From the Home screen, tap Settings.
Tap Wi-Fi.
Tap the Wi-Fi slider to ON.
Scroll to and tap the network you want to connect to.
Enter the password, if necessary.
Tap Join.

APN settings

From the main menu, tap Settings > General > Cellular.
Verify the following settings:
- Data Roaming: On
- Wi-Fi: Off
- 3G Enable: On (Changing the 3G Enable function while the device is on an active call may cause the call to disconnect.)
Tap Cellular Data Network.
Configure as follows:
- APN: fast.t-mobile.com
- Username: <Leave Blank>
- Password: <Leave Blank>
Enter the following information under the MMS section:
- APN: fast.t-mobile.com
- Username: <Leave Blank>
- Password: <Leave Blank>
- MMSC: http://mms.msg.eng.t-mobile.com/mms/wapenc
- MMS Proxy: <Leave Blank>
- MMS Max Message Size: 1048576
- MMS UA Prof URL: http://www.apple.com/mms/uaprof.rdf
Enter the following information under the Internet Tethering section:
- APN: pcweb.tmobile.com
- Username: <Leave Blank>
- Password: <Leave Blank>
Press the Home button to save the APN and exit to the main screen.
Turn the device off and back on.

Upgrade your device

You've probably been through a lot with your device and although it's tough to say goodbye, it just might be time to say your farewells and get a new device. Check out some upgrade options or learn about our Equipment Installment Plan which helps break down the costs of devices into manageable monthly payments.

Already have a new device? Learn how to Set up a new mobile device or visit SD card & device file transfer for details on how to transfer your personal data.

Still need help?

If you're having trouble with your device or it's just not working like it use to do, check out our troubleshooting pages or visit our Community forums for additional help.

You can also visit Official Apple Support or open the attached PDF user guide below for additional support.