PrevNext

How to Unlock a Cellphone or Smartphone

By: Ed Grabianowski & Talon Homer  | 

Lots More Information

Related Articles

Unlock Cell Phone FAQ

Can I unlock my phone myself?
For some phones, you simply have to enter a numeric code into the phone. Smartphones, however, can be more difficult to unlock by yourself and result in a software crack if you're not careful. If you want to unlock your phone, it's best to start by calling your carrier and asking them if they can do it for you.
Can you put any SIM card into an unlocked phone?
Yes, you can put any SIM card into an unlocked phone and it will then work with whatever phone number and account is linked to that card.
Does an unlocked phone work with any carrier?
Yes, it will work with any carrier that operates on a GSM network, which requires you to have a SIM card. If a carrier uses CDMA, like Verizon and Sprint, you may not be able to use your unlocked phone with them.
How do I know if my iPhone is unlocked?
There are a few ways to check this. Find a friend whose phone you know is unlocked, put their SIM card in your phone, and then call your friend's number from another phone. If your phone rings, your phone is unlocked. If your phone generates an error message, it's locked. Call your provider to ask if your phone is unlocked. They'll be able to tell you either way. You can also check on your phone by going to Settings > Cellular. If you see a "Cellular Data Network" option, your iPhone is unlocked.
Are unlocked cell phones worth buying?
Unlocked cell phones tend to cost more to buy outright, however, there are lots of benefits that make it worth it. You can switch between carriers to get the lowest plan cost, swap out the SIM card for a local one when you travel internationally, and sell your phone privately — often for more money — when you're ready for an upgrade.
ElectronicsCell PhonesHow Cell Phones WorkElectronicsCell PhonesCan cell phones make you sterile?ElectronicsCell PhonesCell Phone PicturesElectronicsCell PhonesHow Cell Phone Jammers WorkElectronicsCell PhonesWhich cell phone should I buy for my grandmother?ElectronicsCell PhonesInside a Cell PhoneElectronicsTravel GadgetsIntroduction to Global Cell PhonesElectronicsCell PhonesHow are cell phones cloned?ElectronicsCell PhonesHow Prepaid Cell Phones WorkElectronicsCell PhonesCan you charge your cell phone with a fuel cell?ElectronicsCell PhonesTop 5 Future Cell PhonesElectronicsCell PhonesHow do I use my cell phone as a modem?ElectronicsCell PhonesIntroduction to How Video Conferencing Cell Phones WorkElectronicsCell Phones5 Ways to Donate Your Old Smartphone or Cell Phone to CharityElectronicsCell PhonesCell Phone Tower PicturesElectronicsCell PhonesHow Much Radiation Does Your Cell Phone Emit?ElectronicsHow-to TechHow to Unlock a Cell Phone or SmartphoneElectronicsCell PhonesCan extreme weather damage your cell phone?ElectronicsTravel GadgetsHow Wind-up Cell Phone Chargers WorkElectronicsCell PhonesHow to Tether a Cell PhoneElectronicsCell PhonesHow did digital technology change cell phone service?ElectronicsCell PhonesHow to Unlock an Android Cell PhoneElectronicsCell PhonesScientists Have Invented a Battery-free Cell PhoneElectronicsCell PhonesHow to Decide Between a Smart Phone and Cell PhoneElectronicsTelephone TechnologyHow to Forward Calls from a Landline to a Cell PhoneElectronicsCell PhonesHow to Import Pictures from a Cell Phone to a LaptopElectronicsTech's Effects on the Family5 Ways to Keep Your Kids Off Their Cell PhonesElectronicsTech for KidsCell Phones for Kids: When is the right time?ElectronicsCell PhonesWould a cell phone work on a submerged submarine?ElectronicsCell PhonesHow to Transfer Data from One Cell Phone to AnotherElectronicsCell PhonesCan you use a cell phone as a credit card?ElectronicsCell PhonesWhy is a cell phone called a cell phone?ElectronicsCell PhonesElectromagnetic InterferenceElectronicsCell PhonesWhat does GSM mean in a cell phone?ElectronicsCell PhonesHow does a vibrating cell phone or pager work?ElectronicsCell PhonesHow GPS Phones WorkElectronicsHow-to TechHow to Unlock GSM PhonesElectronicsCell PhonesHow Smartphones WorkElectronicsCell PhonesCell-phone CodesElectronicsCell PhonesCell-phone Frequencies - Cell phone FrequenciesElectronicsCell Phone AppsHow to Fake a GPS Location on Your PhoneElectronicsWirelessHow 5G WorksElectronicsTelephone TechnologyWhy does the phone still work when the electricity goes out?ElectronicsCell PhonesHow Cell-phone Radiation WorksElectronicsCell PhonesHow Cell-phone Viruses WorkElectronicsCell PhonesHow Cell-phone Implants WorkElectronicsHigh-Tech Gadgets5 Tips for Picking the Right SmartphoneElectronicsCell PhonesCell-phone Network Technologies: 3G - 3G Cell phonesElectronicsCell PhonesInside a Digital Cell PhoneElectronicsWirelessHow 4G WorksElectronicsCell PhonesDo Smartphones Really Charge Faster in Airplane Mode?ElectronicsCell Phones4 Reasons Your Phone Keeps Dropping CallsElectronicsCell PhonesPotential Health Risks - How Cell-phone Radiation WorksElectronicsCell PhonesSmartphone Hardware and Software - How Smartphones WorkElectronicsCell PhonesCell-phone Channels - Cell phone ChannelsElectronicsCell PhonesSource of Radiation - How Cell-phone Radiation WorksElectronicsCell PhonesCell Phone Jamming DeviceElectronicsCell PhonesAnalog Cell PhonesElectronicsFuture TechWhat Will Replace the Smartphone?ElectronicsWirelessHow WiFi Phones WorkElectronicsTelephone TechnologyDo smartphone covers really protect phones from damage?ElectronicsCell PhonesCell Phone Jamming Legal IssuesElectronicsCell PhonesCell Phone Network Technologies: 2G - 2G Cell phone NetworksElectronicsCell PhonesCell Phone Jamming BasicsElectronicsCell PhonesGSM and CDMA - How Cell Phones WorkElectronicsCell PhonesCould someone stalk you using your own smartphone?ElectronicsCell Phones6 Creative Uses for an Old SmartphoneElectronicsTravel GadgetsIntroduction to Global Cell Phones