Xs max 13.5438+0 system has no service or cannot receive information.

Mobile phone without service is basically a problem of poor signal.

Try the following points

The first method: restart the iPhone. When our iPhone is restarted, the baseband is also turned off, and then the phone is turned on, and the baseband will start running again, that is, searching for signals again. At this time, the problem of poor signal can be solved temporarily, but it can only be solved for a while. The later, the iPhone needs to be restarted many times. If it is troublesome to restart the iPhone at ordinary times, after all, it still takes some time to turn it on and off, then we can choose to start the flight mode in the mobile phone, which is much faster as the function of restarting the iPhone, and is most suitable for the iPhone that needs to be started several times.

The second method: Turn off the iPhone's 4G network or manually choose your own carrier. Many Apple users said that this method can be used when the cell phone signal is too poor to make a call. In the settings of iPhone, turn off the data option in the cellular mobile network and enable the 4G network, so that our mobile phone will automatically switch to the 3G network, so that the signal will not be particularly bad, and it is still no problem to make a call. Of course, we can also turn off the automatic option in network selection. The automatic option is that the mobile phone automatically identifies which operator it is, and then searches for signals from nearby network base stations. Therefore, in order to improve the mobile phone signal, you can manually choose your own card operator, so the mobile phone signal will be slightly better.

The third method: set the single card mode. Last year, in order to meet the needs of users in China, the new iPhone model was designed with dual cards and dual standby. If the users of these two mobile phones encounter poor signal of their iPhones, we can first set the mobile phone to single card mode, so that the signal of one card will be much better than that of two cards. However, when talking about this dual-card dual-standby mode Bian Xiao, I have to mention that the dual-card dual-standby technology in iPhone is not as mature as that in Android phones, and there are still many problems in use. Therefore, it is suggested that users who want to buy dual-card dual standby for iPhone should not have too much expectation.

The fourth way: update our ios system. When choosing Apple's Intel baseband, the signal instability is normal, so many users will have more problems with the signal when new models come out. At this time, Apple immediately updated the system, and many users of Apple mobile phones have significantly improved their signals after updating the system words. Although it can completely eliminate the bad signal, it is much better than the mobile phone signal before the update, so if you think your signal is poor, we can try to update it.