You have just bought an Doro Liberto 822 and when you turn it on, it displays the following error text: SIM card not recognized. Occasionally the Doro Liberto 822 does not recognize the SIM card and displays this message. In this circumstance, it is not necessarily required to bring the Doro Liberto 822 directly back. Indeed, there are several tricks to fix this issue. We will therefore find out in this article, what are the stuff to do and confirm in order that the SIM card is recognized on your Doro Liberto 822.
How to proceed when the SIM card is not recognized on my Doro Liberto 822
In cases where the SIM card is not recognized on your Doro Liberto 822, below is a list of stuff that may help you identify the source of the issue, find out repairing the issue.
Clean SIM card
One of the first stuff to do if the SIM card is not recognized on your Doro Liberto 822 is to clean it up. In fact, it may possibly happen that dirt partially prevents the contact between the SIM card and the telephone. To wash 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 Doro Liberto 822
Occasionally the issue may possibly sourced from the location of the SIM card. In fact, it often occurs that little metal plugs that normally have to come in contact with the SIM card are a little relaxed. When this is the case, this prevents the Doro Liberto 822 from reading the SIM card. To fix this issue, you just have to thicken the SIM a little by gluing 1 or two pieces of tape at the back.
Test the SIM card on a different cellphone
To find out if the issue originates from the SIM card, you may test it on a different phone and you will have your answer. In case it is not recognized on other devices, you may modify the SIM card.
Try another SIM card on your Doro Liberto 822
In cases where the two previous steps do not give anything, it is actually required to test a different SIM card to find out in the event that the issue originates from the card. Indeed, in the event that other SIM card function on the Doro Liberto 822, it is actually because the issue originates from the card. Otherwise, it is actually at the level of the cellphone that we will have to look.
Verify that your Doro Liberto 822 is not Simlocker
If you have tried several SIM cards on the Doro Liberto 822 and non-e are recognized, the cellphone may perhaps be Simlocker. This means that the Doro Liberto 822 will recognize simply the SIM card of a certain operator. In this circumstance, you have to unlock it. You will find without a hassle a lot of provide on the web that may do that.
Check that the problem doesn’t sourced from the ROM installed on the Doro Liberto 822
This part mainly concerns the people who root the Doro Liberto 822 to install a ROM that is not original. In cases where this is actually what you have done, be aware that the unrecognized SIM card issue is quite common after installing fresh ROMs. We suggest that you reinstall an original ROM and re-test it.
In cases where nothing works
In cases where all the above solutions do not work, we recommend you to bring your Doro Liberto 822 and the SIM card back to 1 of your operator’s shops.
