Nut pro3 does not read cards

1。 The poor contact between the sim card and the slot is usually caused by the manufacturer's design or production defects. The performance is that the SIM card is not in close contact with the contacts in the slot, so there will be a failure to identify the SIM card.

Solution: The solution to this situation is relatively simple. You can try to stick a few pieces of paper on the back of the SIM card to increase the actual thickness of the SIM card and make it more tightly stuck in the card slot.

2。 There is something wrong with the electrical performance of the slot of your mobile phone, which may be caused by wet weather or careless bumping during use.

Solution: If you try to use the sticker mentioned above to increase the thickness of the sim card, but it still doesn't solve the problem, I suggest you send your mobile phone to a repair station for testing. Generally speaking, it can be solved by replacing the parts of the slot.

3。 There is a bug in your mobile phone software.

Solution: The handling method of this situation is also relatively simple. The mobile phone system software can be updated to the latest version as far as possible. Friends with strong hands-on ability can download the new version of system software from mobile phone manufacturer official website to update themselves.

Note: If your mobile phone uses a small card, it may not be cut properly when cutting the card, resulting in frequent and occasional poor contact. The elimination method is simple. You can try using your friend's mobile phone card to see if there will be any problems.

Finally, if you really can't find the problem and solution, you might as well send it to the maintenance station. If it is still under warranty, you'd better send it to the warranty.