Alcatel U3: Unrecognized SIM card

You have just acquired an Alcatel U3 and when you turn it on, it displays the following error text: SIM card not recognized. Sometimes the Alcatel U3 does not recognize the SIM card and displays this message. In this case, it is not necessarily required to bring the Alcatel U3 directly back. Indeed, there are many methods to solve this trouble. We will therefore discover in this tuto, what are the things to do and verify in order that the SIM card is recognized on your Alcatel U3.unrecognized-sim-card-alcatel-u3

How to proceed when ever the SIM card is not recognized on my Alcatel U3

Whenever the SIM card is not recognized on your Alcatel U3, below is a list of things that may help you discover the source of the trouble, discover repairing the trouble.

Clean SIM card

One of the first things to do if the SIM card is not recognized on your Alcatel U3 is to wash it up. In fact, it may possibly happen that dirt partially prevents the contact between the SIM card and the telephone. To clean it, pass a small dab of cloth over it and check if it is not damaged.

Check the location of the SIM card on your Alcatel U3

Sometimes the trouble may possibly originate from the location of the SIM card. In fact, it often occurs that small metal plugs that most of the time have to come in contact with the SIM card are a little bit relaxed. When this is the case, this prevents the Alcatel U3 from reading the SIM card. To solve this trouble, you just simply have to thicken the SIM a little by gluing one or two pieces of tape at the back.

Test the SIM card on another cellphone

To find out if the trouble comes from the SIM card, you’re able to test it on another phone and you will have your answer. In case it is not recognized on other devices, you’re able to change the SIM card.

Try another SIM card on your Alcatel U3

Whenever the two previous steps do not give anything, it is actually required to test another SIM card to find out whenever the trouble comes from the card. Indeed, whenever other SIM card work on the Alcatel U3, it is actually because the trouble comes from the card. Otherwise, it is actually at the level of the cellphone that we will have to look.

Check that your Alcatel U3 is not Simlocker

If you have tried many SIM cards on the Alcatel U3 and none are recognized, the cellphone could be Simlocker. This means that the Alcatel U3 will recognize simply the SIM card of a certain operator. In this case, you have to unlock it. You will find without a hassle a lot of provide on the internet that may do that.

Check that the problem will not originate from the ROM installed on the Alcatel U3

This part mainly concerns the people who root the Alcatel U3 to install a ROM that is not original. Whenever this is actually what you have done, be aware that the unrecognized SIM card trouble is quite common after installing new ROMs. We recommend that you reinstall an original ROM and re-test it.

Whenever nothing functions

Whenever all the above solutions do not work, we recommend you to bring your Alcatel U3 and the SIM card back to one of your operator’s shops.