What if there is no signal on Xiaomi Play mobile phone?

If there is no signal bar in the status bar during the use of the mobile phone, or you can't make a phone call, send a text message or surf the Internet; You can try the following steps to troubleshoot:

1. The phone can't make a call or receive a call, but the signal bar of the phone is normal, so it is necessary to check whether the SIM card is in arrears;

2. Determine the version of the mobile phone and whether it supports the type of SIM card used. For example, buying a telecom contract machine in the business hall and inserting a mobile SIM card may lead to no signal (no service);

3. Enter * # * # 64663 # * * in the dialing interface to enter hardware detection, and select "SIM card detection" to check whether the SIM card status is inserted;

A. If there is no SIM card or a SIM card is not inserted, the SIM card cannot be detected after trying to replace the SIM card. It is suggested to restore the factory or brush the machine, but it is still invalid. It is recommended to go to Xiaomi Authorized Service Center for testing; If it can be detected after replacement, it is judged that the SIM card is faulty. Please go to the operator's business hall to replace the SIM card and try again.

B. If the SIM card has been inserted, the SIM card can be recognized normally, indicating that there is no problem with the card slot. Continue the following investigation.

4. Because some protective cases in the market are plated in a large area in pursuit of beauty, the metal inside will shield the mobile phone signal, thus affecting the reception and transmission of the mobile phone signal. If such a protective shell is used, it is recommended to take it off temporarily to see if the signal situation returns to normal;

5. If you try to make a phone call in other places, for example, outdoors and in an undisturbed environment, will this happen? , and eliminate the weak mobile phone signal caused by the signal difference of operators in the use environment (such as basement, tunnel, relatively closed building, etc.). ), the signal bar will not be displayed;

6. Determine whether it is the operator's own network problem. For example, check whether the network of the same operator used by colleagues or friends is normal. In addition, we can't rule out the cause of SIM card aging. Try to replace the SIM card of the same operator or other operators to determine whether it is a network coverage problem; (For example, when Unicom is on standby for 2G, many mobile phones will have no service, because 2G coverage is not good in some areas);

7. When there is no problem with SIM card identification and network coverage, determine the following settings:

A. settings >> dual card and mobile network >> select the corresponding SIM card > > network type selection > & gt4G takes precedence.

B. Settings >> Dual Card and Mobile Network >> Select the corresponding SIM card > > Select operator >> Automatic selection (this setting is not available when installing a telecom SIM card).

8. After the above settings are invalid, it is recommended to restore the factory or try to brush the machine. If it is still invalid, please move it to the local Xiaomi authorized service center for testing and processing.