IN S40 C3-00,C3-01,X3-02,X2-01 SOME PEOPLE NOT ABLE TO USE WHATSAPP OR NOT ABLE TO TO SEND AND RECEIVE MSG IN WHATS APP HERE IS SOLUTION
SOLUTION
(1)CHEK PHONE DATE AND TIME AND GMT TIME (IF YOU USING IN INDIA SELECT GMT+530)
(2)GO IN YOUR PHONE SETTING >CONFIGRATION > DEFULT CONFIGRATION IF THER IS MORE THEN 1 SETTING REMOVE ALL JUST USE ONE GPRS SETTING AND SELECT AS DEFULT
(3)IF STILL YOU NOT ABLE TO SEND MSG IN WHATS APP DELET ALL DEFULT GPRS SETTING AFTER GO PERSONAL CONFIGARTION ,
YOU HAVE TO ADD TWO GPRS SETTING ONE IS WEB SETTING AND ONE IS ACCESS POINT SETTING
HERE IS WEB SETTING EXAMPLE
ACCOUNT NAME :VODAFONE
USERNAME 
UT BLANK (NO NEED USER NAME )
PASSWORD UT BLANK (NO NEED PWD)
USE PREF.AC.POINT: SELECT NO
AFTER GO IN ACC.SETTING > PROXY SETTING (DONT DO ANYTHING IN PROXY SETTING >
BARER SETTING AND PUT YOUR SERVICE PROVIDER APN FOR EXAMPLE IF YOU USING VODAFONE PUT WWW
