T-Mobile G1: Unrecognized SIM card

You have just acquired an T-Mobile G1 and when you turn it on, it displays the following error message: SIM card not recognized. Oftentimes the T-Mobile G1 does not recognize the SIM card and displays this message. In this circumstance, it is not necessarily necessary to bring the T-Mobile G1 directly back. Indeed, there are several techniques to fix this problem. We will consequently find out in this article, what are the stuff to do and verify so that the SIM card is recognized on your T-Mobile G1.unrecognized-sim-card-T-Mobile-G1

What to do when ever the SIM card is not recognized on my T-Mobile G1

If the SIM card is not recognized on your T-Mobile G1, below is a list of stuff which could help you identify the source of the problem, find out repairing the problem.

Clean SIM card

One of the first stuff to do if the SIM card is not recognized on your T-Mobile G1 is to clean it up. Actually, it may possibly happen that dirt partially prevents the contact between the SIM card and the smartphone. To wash it, pass a small dab of cloth over it and check if it is not damaged.

Check the tracking of the SIM card on your T-Mobile G1

Oftentimes the problem may possibly sourced from the tracking of the SIM card. Actually, it often happens that tiny metal plugs that normally have to come in contact with the SIM card are a bit relaxed. When this is the case, this prevents the T-Mobile G1 from reading the SIM card. To fix this problem, you just simply need to thicken the SIM a little by gluing one or two pieces of tape at the back.

Test the SIM card on a different phone

To find out if the problem originates from the SIM card, you can actually test it on a different phone and you will have your answer. In case it is not recognized on other devices, you can actually change the SIM card.

Try another SIM card on your T-Mobile G1

If the two previous steps do not give anything, it can be necessary to test a different SIM card to find out in cases where the problem originates from the card. Indeed, in cases where other SIM card work on the T-Mobile G1, it can be because the problem originates from the card. Otherwise, it can be at the level of the phone that we will have to look.

Verify that your T-Mobile G1 is not Simlocker

When you have tried several SIM cards on the T-Mobile G1 and none are recognized, the phone could be Simlocker. This means that the T-Mobile G1 will recognize just the SIM card of a certain operator. In this circumstance, you have to unlock it. You will find without a hassle a lot of offer on the web which could do that.

Check that the problem doesn’t sourced from the ROM installed on the T-Mobile G1

This part mainly concerns the people who root the T-Mobile G1 to install a ROM that is not original. If this is actually what you have done, be aware that the unrecognized SIM card problem is quite common after setting up fresh ROMs. We highly recommend that you reinstall an original ROM and re-test it.

If nothing works

If all the above solutions do not work, we advise you to bring your T-Mobile G1 and the SIM card back to one of your operator’s shops.