How do I unlock Alcatel 356

You probably need to take it to the AT&T people and get it really unlocked. The SIM card may be bad or incompatible, as well. OR, I'd return the phone through eBay and look for one locally you don't pay for until it is demonstrated to work. Good luck.

try code from service provider.

The fastest way to obtain a network unlock code is to go to eBay and - in eBay's search bar - enter your phone's brand and model number followed by the words, unlock code. (ie., Samsung SGH-T629 Unlock code). If your phone can be network unlocked, someone on eBay will be selling codes to do that. I've purchased network unlock codes on eBay for as little as $1 USD. And, they have always worked.
Note: Sometimes, you have to replace your SIM card with one that is not for your Cellular Network (or remove your SIM card from your phone) to get the unlock code to work.

You can purchase an unlocked code for the tmobile vairy on ebay. take a look at this link http://shop.ebay.com/i.html?_nkw=vairy+touch+unlock+code&_sacat=0&_dmpt=PDA_Accessories&_odkw=tmobile+6303+unlock+code&_osacat=0&bkBtn=&_trksid=p3286.m270.l1313

your phone must first be unlocked to use it other sim cards, try unlocking your phone using codes form from http://www.prounlocking.com/ and http://www.mobileunlockguide.com/

First, you need to make sure your phone is SIM unlocked. After unlocking your phone, you can purchase an Cingular (AT&T) SIM card on eBay. Then call 1-800-331-0500. And set up a Go Phone account.

Go Phone is owned by Cingular (AT&T) in the United States. This is a pre-pay cell phone account that uses the Cingular (AT&T) SIM cards. You will have several options as to how you will be billed depending on the service you require. Pre-pay data is also available too, for an extra fee with the Go Phone plan.

See Go Phone Plans: http://bit.ly/cIo8dG


AT&T uses the 850/1900MHz band (1900 MHz UMTS band for 3G data) for cell phones in the US. Make sure your phone can use this bands.

If you need to SIM unlock your phone, you can do this two different ways.

The first is to contact your service provider and inform them that you need to have your phone SIM unlocked for international travel. Most providers require your account to be in good standing and that you've been their customer for a certain amount of time. Then, it's free.

The second is to purchase an unlock code. These can usually be found on eBay for as little as $2 US.

To search for the unlock code for your phone, on eBay, type in your phone model and the words 'unlock code' and your current service provider. (Example: Samsung BlackJack i607 Unlock Code Rogers) Once purchased, simply follow the instructions sent to you with the code and unlock your phone - then use the Cingular (AT&T) SIM card with the Go Phone pre-pay plan.

Tip: On some phones you must insert a SIM card NOT used by your current service provider when you enter the unlock code.

It may be caused that when you take out sim from old phome it has damaged, try for old one is it still working? if not then your sim is dead, also old phones made SIM-s to be bend and such SIM-s have difficlt electrical connection with new phones.
Also find if "this sim only" is activated in your phone.
It must give you signal, Insert sim card, or insert proper sim. If insert sim card warning card is damaged or have not enough good connection, if another, then this sim only is activated you first you must unlock it to work .

you can purchase a "turbo universal sim unlock" chip on ebay for less than ten bucks, insert it in between you sim card and the phone sim contacts... it will allow you to use your sim in the new phone.

you can purchase a "turbo universal sim unlock" chip on ebay for less than ten bucks, insert it in between you sim card and the phone sim contacts... it will allow you to use your sim in the new phone.

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