Xiaomi note mobile phone signal is good, you can surf the Internet, but you can't make a phone call. What's wrong with texting

1) Check whether the mobile phone number cache of the operator server has not been released. At this time, you can call Unicom or mobile customer service hotline to find someone to refresh the cache and network manually. This is not difficult to do, just make a phone call.

2) Put the mobile phone card on another mobile phone to test whether there is any problem with the card. This program is not difficult. If it can be used on other mobile phones, there is something wrong with the mobile phone.

3) Turn it off 10 minutes before starting the test. Sometimes the network will be blocked. You can disconnect the network when you turn it off and reconnect it when you turn it on. This method can generally be used by telephone.

4) Test the cell phone signal in another environment (area). In some places, there is a lot of interference around, which makes it impossible for mobile phones to answer calls or send and receive text messages.

5) Go directly to the operator's business hall to replace the new sim card. The SIM card of mobile phone is used for a long time, and the surface is easy to oxidize, which leads to poor contact of the chip. You can go directly to the nearby business hall and get a new card.