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Let me give you a little background and then some solutions. This is generic because I don't know your carrier. I'm using ATT as an example.
Phones are naturally unlocked, but a service provider might lock them
When originally manufactured, all GSM cell phones are unlocked. That is, they can be used with any SIM from any cellphone service provider - always assuming, of course, that the cellphone service provider has compatible GSM service on the same frequency bands that the phone can operate on.
Most cell phone service providers electronically 'lock' the phone so that it can only be used with their service. There are obvious reasons why they choose to do this - in particular, to force you to pay what are usually very high roaming charges when you take your phone out of their network and use it elsewhere in the world.
Fortunately, this locking is reversible. With some phones, it is possible to simply enter an unlocking password code into the phone and it is immediately then unlocked. Other phones need to be connected up to a special unlocking data terminal.
Your phone has to be unlocked by the carrier. LG, Motorola, Sony Ericsson, Nokia and most of their ilk, will not give consumers the unlock codes but don't despair.
A PUK (PIN Unlock Key) code is required to unlock SIM cards that have become locked following three successive incorrect PIN entries. If your SIM card becomes locked, you will need to get a PUK code from your carrier. For example, if you have AT&T to unlock your SIM card, you can obtain your phone's PUK code from AT&T by:
● logging in to your my wireless Account online ● using their Technical Support Chat ● calling Customer Care at 1-800-331-0500
To get your phone's PUK code online from ATT:
● Log in to your my wireless Account. ● Select My Services under My Account. ● From the My Services screen, select My Phone/Device. ● Select Unblock SIM Card. ● The Unblock SIM screen will display your PUK code.
Once you receive your PUK code, you will need to enter it into your phone to set a new PIN code.
Note: If you enter the wrong ATT PUK code 10 times in a row, your SIM card will be invalidated, and you will need to purchase a new SIM Card. The phone will display the following error: "PUK blocked call operator."
There are three other ways to unlock a phone:
● The carrier will unlock the phone for you at one of its retail outlets; ● You can do it yourself by clicking on this link Free Unlock Codes , ● Pay $3.89 at the following website: www.theunlockshack.com/. I have absolutely no affiliation or relationship with The Unlock Shack or its principals.
I trust that this is helpful and solves your problem. All the best
Hi, issues like this are related to your Sim card (network), not your Cell Phone . In most cases, regarding the text messages, the problem is from the Service Operator. Have you tried the Sim card on another phone? If not, remove the Sim card, insert it on another phone and try sending a message from another mobile to you number, or you can do it in vise- versa by inserting another Sim card on your mobile.
If you can't receive text messages even when it's inserted on another handset, then you will need to call the customer care of your Network Operator and tell them your problem, they will help you fix it immediately.
You can check the message center number, but I don't think it's very much important in your case, well, if you wanna try, just check the text message settings and verify that the message center number (which is currently in use) is the same number which is on another phone with the same network (the other Sim should be of the same network in your area). If it's different, make the changes and save the settings. Also disable the "Receive Via" or similar settings.. (I can't recollect the exact settings as i don't have the same model with me, please excuse me for this.).
If the same Sim card doesn't receive text messages using another handset, don't bother to change the settings or to make any changes with it, first call the customer care and verify from them, you may make mistakes instead of fixing it.
for sending text messages : 1.go to your message settings and check the message center number to see if it is correct 2. call to your network operator customer care 3. request the message center number... 4.note it down 5. go to message settings>message center number 6. insert the number which is noted by you and save it
It has absolutely nothing to do with the sim card. It is the Puma phone the one with the issue. On mine I can send messages, but I cannot see any sms I receive, it's like it got amnesia or something, nor I can see any message I send, I can only send it but afterwards the phone won't display anythnig!!