Realtek RTL8723BE weak wifi signal problem in ubuntu

To solve the weak wifi signal Problem perform the following steps:

Realtek RTL8723BE could be a wireless network adapter. Realtek RTL8723BE wireless network adapter has issues in managing the antenna on the UNIX system. this can cause a weak WLAN signal drawback.

Open your terminal. To open press 

• ctrl+alt+t.

install required packages using the command: 

$ sudo apt-get install build-essential git

Clone the new Realtek wifi modules: 

$git clone https://github.com/lwfinger/rtlwifi_new/

Change The Directory: 

$ cd rtlwifi_new

Build it using the command: 

$ sudo make

Install it using the command: 

$ sudo make install

Unload the module using the command: 

$sudo modprobe -r rtl8723be

Load the module using the command: 

$sudo modprobe rtl8723be

Then use the below command in the terminal and enter. It will scan all networks with signal strength. 

$sudo iw dev wlp13s0 scan

To make the settings permanent, type the below command in the terminal and press enter. 

$echo "options rtl8723be ant_sel=2" | sudo tee /etc/modprobe.d/50-rtl8723be.conf