And download, anyone file explorer (I don't use es file editor cause it's not opened same file) I used solid explorer and txeditor
Firstly u will open file explorer.
Follow the road to go to the root of the following.
/data/misc/wifi. And find hostapd.conf
Open and edit or add this code.
First add this line end 360 value, do you see up line supported value, I choose 360 it's work.
2 - this line end adding 4.5 value, normally value 0
3 - this ap tx code work for wifi configuration. I adding this line it's working tx antenna limit u will look http://wiki.mikrotik.com/wiki/Manual:Interface/Wireless here
There are"0" value = no limit
Okey it's file finish lets go twice file.
Opening file with texeditor and change this value 30> make 45
Now, we will last file edit wpa_supplicant.conf find and open again with texeditor after will change this lines value
sched_scan_long_intervals=15 value changing
End last value
Change 30 to 45
All of Okey finish. Save and exit after reboot device..
It's really work for me. So I downloading app Google play and good signal wifi in my kitchen good luck..
Sorry for English..