
The first step in case of weak network should be to change your location. If you are in a basement, lift or a building with thick walls, then the network signal may be weak there. In such a situation, going to the balcony, near the window or in an open place can improve the network.
Switching off the phone once and then turning it on again can also prove to be helpful in improving the network. This reconnects the network signal and also removes minor problems related to the software.
Putting the phone on airplane mode for a few seconds and then turning it off is another easy trick. This makes the phone search for the network again and reset the connection to the network. Sometimes this fixes the signal problem immediately.
If the network problem persists, remove the SIM card, clean it once and then insert it again correctly. An old or damaged SIM card can also cause interference in the network. Consider replacing the SIM if needed.