Mobile users know that a bad network signal is when a 0 or 1 mark is displayed on the screen (in the line indicating the name of the operator and the type of connection), there are constant interruptions in voice communication and the Internet, and SMS messages arrive every other time.
How to improve the connection status, iTechua resource experts told.
The first thing they advise is to restart the smartphone or put it into airplane mode for a short time. If it doesn’t help, you can change the network type in the connection settings. For example, now you have 4G (LTE). If there is no connection at all, then we are trying to change it to 3G or even 2G, so that there is at least some kind of connection.
It is possible that the problem is that your smartphone is running slowly. Sometimes it’s not the Internet that slows down, but the running application that works with the network. Here you need to restart the smartphone, and also pay attention to the amount of free memory - if it is very small, the device may slow down.
It is impossible to exclude hardware problems with the device, because over time, any parts undergo degradation. If other smartphones work better in the area in which you are now, then most likely the problem is with the hardware of your device.
Various electromagnetic interferences are reflected in any radio signal. But it is difficult to get away from obstacles, except to leave the location. For example, there is an option when there is a room in the house, in the corner of which cellular communication practically does not work - 2 walls are enough, and there is almost no connection. Here you will have to empirically look for the place where the connection will be better or completely change the location. If this is a residential building or apartment, then an application to a mobile operator can help improve the quality of communication. If he does not have the technical capability for this, only the purchase of a mobile communication amplifier will save him.
Recall that earlier told how to charge a smartphone during a blackout using AA batteries.
Source: Fakty

