Whereas a locked cell phone will only accept SIM cards from its current provider, an unlocked cell phone will accept a SIM card from any service provider.
Steps. 1. Power down your cell phone, remove the battery cover and battery, then look for the SIM card. 1  If you cannot find a SIM card in the back, look for one in the side or top of the phone. 2  It may be covered by a small plastic flap. 3  On some models, you will need to open the flap with a pin Re: How to tell if my phone is unlocked for any carrier WITHOUT using another carrier sim. Hi I am trying to switch my phone from T-Mobile to Straight talk. I got a sims card from straight talk and the phone is supposed to be Unlocked. I was able to make a new APN, but I cannot delete the old Tmobile APN. Re: How to tell if my phone is unlocked for any carrier WITHOUT using another carrier sim. I have purchased a AT&T HTC Vivid for a very good price from someone at work that had just finished his contract and got a new phone. Best Answer: There are a number of ways. Try using a different carrier's SIM. If it works, your phone is unlocked to use on any network. If you bought the phone on a network plan, chances are it has been locked to the network. Check with the store you bought from. They should be able to tell. Most pre-paid phones are locked pending certain conditions 2. Insert a different service provider's SIM card into your phone and close it back up. For example, if you have T-Mobile, insert a AT&T SIM card. The easiest way to do this is to borrow a phone from a friend. 1. Power down your cell phone, remove the battery cover and battery, then look for the SIM card. 1  If you cannot find a SIM card in the back, look for one in the side or top of the phone. 2  It may be covered by a small plastic flap. 3  On some models, you will need to open the flap with a pin 3. Insert another network provider's SIM card. You can use an inexpensive phone, or borrow a SIM card from a friend. Re-assemble the iPhone, then turn it back on. 1  You may be able to go to another provider's retail outlet and ask a customer service representative to test out a SIM card in your phone.  To use this service, you’ll need to obtain your iPhone’s IMEI code – which is a code that is unique to your device. If you have a SIM card installed, and only if, you can see the IMEI code by dialing *#06#. Alternatively, you can plug your iPhone into your Mac or PC and start iTunes. On the device Summary screen, you’ll see a line showing your phone number (the line below the phone’s data capacity).  Whereas a locked cell phone will only accept SIM cards from its current provider, an unlocked cell phone will accept a SIM card from any service provider. (This is very useful if you want to use your phone abroad, for example.) To identify an unlocked cell phone, follow these steps. 1. Power down your cell phone, remove the battery cover and battery, then look for the SIM card. 1  If you cannot find a SIM card in the back, look for one in the side or top of the phone. 2  It may be covered by a small plastic flap. 3  On some models, you will need to open the flap with a pin GSM phones use subscriber identity module (SIM) cards. A SIM card is a small card that's inserted into the phone. It contains all your contacts and settings, and it's linked to your account. You can take the SIM card out, put it into another phone, and if someone calls your number, the new phone will ring. The SIM card won't work in other phones, and the phone won't work with other SIM cards. If you live in North America, you can usually determine whether your phone is GSM or CDMA based on the service provider you use. T-Mobile and AT&T use GSM, while Verizon and Sprint use CDMA. Re: How to tell if my phone is unlocked for any carrier WITHOUT using another carrier sim. Originally Posted by OperationA7X You don't need to carrier unlock for mods, you just need to unlock the bootloader and flash a custom recovery. And there's a free way to carrier unlock the phone, but it requires S-OFF. Re: How to tell if my phone is unlocked for any carrier WITHOUT using another carrier sim. I have purchased a AT&T HTC Vivid for a very good price from someone at work that had just finished his contract and got a new phone.
http://www.wikihow.com/Find-Out-if-Your-Phone-Is-Unlocked http://forums.androidcentral.com/htc-vivid/227614-how-tell-if-my-phone-unlocked-any-carrier-without-using-another-carrier-sim.html https://answers.yahoo.com/question/index?qid=20061108053732AAEDEXg http://www.wikihow.com/Find-Out-if-Your-Phone-Is-Unlocked http://www.wikihow.com/Check-if-Your-iPhone-Is-Unlocked http://www.iphonehacks.com/2013/06/check-iphone-unlocked.html http://www.wikihow.com/Find-Out-if-Your-Phone-Is-Unlocked http://electronics.howstuffworks.com/how-to-tech/how-to-unlock-cell-phone1.htm http://forums.androidcentral.com/htc-vivid/227614-how-tell-if-my-phone-unlocked-any-carrier-without-using-another-carrier-sim.html
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