Reply To: PIC16F877A with GPS and GSM for tracking purpose

You should use UART1_Read_Text() or UART1_Read() without any delays…
Eg:

for(i=0;i<34;)
{
   if(UART1_Data_Ready())
   {
       s[i] = UART1_Read();
       i++;
   }
}
// All further data processing or LCD commands should be here..