Why can't the mobile phone always receive the SMS verification code?

The mobile phone can't receive the verification code, probably because the mobile phone is in arrears, which makes it impossible to send and receive short messages normally.

2. Blacklist software interception

Adding the number that sent the verification code to the blacklist or being intercepted by the security software installed in the mobile phone will also lead to the failure to receive the verification code.

3. Poor network environment

It is best not to verify in the place with poor signal, which will not only delay the reception of verification code or fail to receive verification code, but also lead to the decline of mobile phone power.

4. Apply to the operator for shielding.

If some notification messages have been complained by operators as spam messages, such messages will be blocked by operators and mobile phones will not be able to receive such information. You can call the customer service phone of the mobile phone operator first, verify the problem, and then apply to the operator for unblocking.

5. There is something wrong with the sender.

When you register an APP and need to verify it, you can't receive the verification code for a long time, which may be caused by an error in the other party's system. You need to wait patiently for a few minutes. If you still can't get it, you can contact the customer service of APP.

Extended data:

Frequently asked questions about the use of mobile phones:

First, it's cold, and the mobile phone is automatically turned off.

Principle: The resistance of lithium battery electrolyte will increase with the decrease of temperature, which will hinder the battery discharge.

Solution: Put your mobile phone in your pocket. When the temperature rises, the battery will generally return to normal.

Second, the cell phone suddenly lost its signal.

First, check whether the mobile phone is in flight mode and whether there is an airplane icon in the upper right corner of the screen; In elevators, subways, tunnels or remote areas, mobile phones may have no signal because of poor signal reception; Restart the phone, insert the SIM card again, and search the network automatically/manually, which can generally be restored.

Third, mobile phones consume electricity very fast.

The daily use of smart phones is generally one charge a day. There are also some small ways to save electricity, such as cleaning up background running programs in time, reducing screen brightness, turning off Bluetooth, GPS and wifi, and so on.

Four. Export/import of mobile phone address book

With the new mobile phone, the import of address book is a thorny issue. The usual method is to download a QQ synchronization assistant, which is easy to do. Of course, some mobile phones now have their own phone book import, and the same brand of mobile phones can even complete the data import through the whole machine transfer.